2019
DOI: 10.1016/j.omtn.2019.10.013
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Size Matters: Arginine-Derived Peptides Targeting the PSMA Receptor Can Efficiently Complex but Not Transfect siRNA

Abstract: Oligoarginine sequences conjugated to a short cancer-targeting peptide (CTP) selective for the prostate-specific membrane antigen (PSMA) receptor was developed for selective small interfering RNA (siRNA) delivery to a human metastatic/castrationresistant prostate cancer (PCa) cell line, which expresses PSMA on the surface. The PSMA-R n (n = 6 and 9) peptides were synthesized by solid-phase peptide synthesis, characterized by liquid chromatography-mass spectrometry (LC-MS) and condensed with glucose-regulated p… Show more

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Cited by 9 publications
(3 citation statements)
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“…All procedures were performed essentially as previously described. 86 In brief, 1 Â 10 7 viable cells were subcutaneously injected into the flanks of mice. Tumor growth was examined every 3 days using a vernier caliper and the mice were sacrificed 4 weeks later.…”
Section: Tumor Inoculation Assay In Nude Micementioning
confidence: 99%
“…All procedures were performed essentially as previously described. 86 In brief, 1 Â 10 7 viable cells were subcutaneously injected into the flanks of mice. Tumor growth was examined every 3 days using a vernier caliper and the mice were sacrificed 4 weeks later.…”
Section: Tumor Inoculation Assay In Nude Micementioning
confidence: 99%
“…68 However, tumors occur when cancer cells escape the immune system by creating an immunosuppressive environment. [69][70][71][72] Therefore, the focus of recent research has shifted from targeted therapy to immunotherapy, hoping to be used to treat more patients with cancer. This is as a result of immune escape being common for all tumors, and restoring the immune system can help destroy tumors.…”
Section: Next-generation Sequencing and Immunotherapy For Tumorsmentioning
confidence: 99%
“…However, increasing studies have shown that the incorporation of relatively large, charged fluorophores, bulky hydrophobic drugs and large, complex biologics such as siRNA, plasmid DNA, and proteins can lead to significant changes in the cell uptake mechanism of the CPP (Macchi et al, 2015;Akhunzada et al, 2017). Furthermore, in certain cases cell uptake was abrogated when a CPP targeting the prostate membrane antigen receptor (PSMA) was combined with siRNA due to the formation of large, negatively charged particles according to DLS and TEM (Cultrara et al, 2019). Therefore, extensive structural studies are necessary to fully understand the translocation mechanism of the cargo-bound CPP.…”
Section: Tatmentioning
confidence: 99%