PMID- 30373234 OWN - NLM STAT- MEDLINE DCOM- 20181231 LR - 20181231 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 23 IP - 11 DP - 2018 Oct 27 TI - Shape Effects of Peptide Amphiphile Micelles for Targeting Monocytes. LID - 10.3390/molecules23112786 [doi] LID - 2786 AB - Peptide amphiphile micelles (PAMs) are a nanoparticle platform that have gained popularity for their targeting versatility in a wide range of disease models. An important aspect of micelle design is considering the type of hydrophobic moiety used to synthesize the PAM, which can act as a contributing factor regarding their morphology and targeting capabilities. To delineate and compare the characteristics of spherical and cylindrical micelles, we incorporated the monocyte-targeting chemokine, monocyte chemoattractant protein-1 (MCP-1), into our micelles (MCP-1 PAMs). We report that both shapes of nanoparticles were biocompatible with monocytes and enhanced the secondary structure of the MCP-1 peptide, thereby improving the ability of the micelles to mimic the native MCP-1 protein structure. As a result, both shapes of MCP-1 PAMs effectively targeted monocytes in an in vitro binding assay with murine monocytes. Interestingly, cylindrical PAMs showed a greater ability to attract monocytes compared to spherical PAMs in a chemotaxis assay. However, the surface area, the multivalent display of peptides, and the zeta potential of PAMs may also influence their biomimetic properties. Herein, we introduce variations in the methods of PAM synthesis and discuss the differences in PAM characteristics that can impact the recruitment of monocytes, a process associated with disease and cancer progression. FAU - Joo, Johan AU - Joo J AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA. johanjoo@usc.edu. FAU - Poon, Christopher AU - Poon C AUID- ORCID: 0000-0002-9797-7162 AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA. poonc@usc.edu. FAU - Yoo, Sang Pil AU - Yoo SP AD - Institute for Molecular Engineering, University of Chicago, 5747 South Ellis Avenue, Chicago, IL 60637, USA. sangpilyoo@mednet.ucla.edu. AD - Current Affiliation: Medical Scientist Training Program, David Geffen School of Medicine, University of California, Los Angeles, CA 90096, USA. sangpilyoo@mednet.ucla.edu. FAU - Chung, Eun Ji AU - Chung EJ AUID- ORCID: 0000-0002-7726-5555 AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA. eunchung@usc.edu. AD - Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA. eunchung@usc.edu. AD - Division of Nephrology and Hypertension, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA. eunchung@usc.edu. AD - Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90033, USA. eunchung@usc.edu. AD - Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Los Angeles, CA 90033, USA. eunchung@usc.edu. LA - eng GR - R00 HL124279/HL/NHLBI NIH HHS/United States GR - R00HL124279/National Heart, Lung, and Blood Institute/ GR - 00347-00001/L. K. Whittier Foundation/ PT - Journal Article DEP - 20181027 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Chemotactic Factors) RN - 0 (Micelles) RN - 0 (Peptides) RN - 0 (Surface-Active Agents) SB - IM MH - Animals MH - Cell Line MH - Chemotactic Factors/chemistry/pharmacology MH - Mice MH - *Micelles MH - Monocytes/*drug effects MH - Nanoparticles/chemistry/ultrastructure MH - Peptides/*chemistry/*pharmacology MH - Surface-Active Agents/*chemistry/*pharmacology PMC - PMC6278295 OTO - NOTNLM OT - monocyte targeting OT - monocytes OT - nanoparticle shape OT - peptide amphiphile micelles COIS- The authors declare no conflict of interest. EDAT- 2018/10/31 06:00 MHDA- 2019/01/01 06:00 PMCR- 2018/10/27 CRDT- 2018/10/31 06:00 PHST- 2018/09/24 00:00 [received] PHST- 2018/10/23 00:00 [revised] PHST- 2018/10/25 00:00 [accepted] PHST- 2018/10/31 06:00 [entrez] PHST- 2018/10/31 06:00 [pubmed] PHST- 2019/01/01 06:00 [medline] PHST- 2018/10/27 00:00 [pmc-release] AID - molecules23112786 [pii] AID - molecules-23-02786 [pii] AID - 10.3390/molecules23112786 [doi] PST - epublish SO - Molecules. 2018 Oct 27;23(11):2786. doi: 10.3390/molecules23112786.