PMID- 33011241 OWN - NLM STAT- MEDLINE DCOM- 20210707 LR - 20220111 IS - 1873-4995 (Electronic) IS - 0168-3659 (Print) IS - 0168-3659 (Linking) VI - 329 DP - 2021 Jan 10 TI - CCR2-targeted micelles for anti-cancer peptide delivery and immune stimulation. PG - 614-623 LID - S0168-3659(20)30570-8 [pii] LID - 10.1016/j.jconrel.2020.09.054 [doi] AB - Signaling between the CC chemokine receptor 2 (CCR2) with its ligand, monocyte chemoattractant protein-1 (MCP-1) promotes cancer progression by directly stimulating tumor cell proliferation and downregulating the expression of apoptotic proteins. Additionally, the MCP-1/CCR2 signaling axis drives the migration of circulating monocytes into the tumor microenvironment, where they mature into tumor-associated macrophages (TAMs) that promote disease progression through induction of angiogenesis, tissue remodeling, and suppression of the cytotoxic T lymphocyte (CTL) response. In order to simultaneously disrupt MCP-1/CCR2 signaling and target CCR2-expressing cancer cells for drug delivery, KLAK-MCP-1 micelles consisting of a CCR2-targeting peptide sequence (MCP-1 peptide) and the apoptotic KLAKLAK peptide were synthesized. In vitro, KLAK-MCP-1 micelles were observed to bind and induce cytotoxicity to cancer cells through interaction with CCR2. In vivo, KLAK-MCP-1 micelles inhibited tumor growth (34 +/- 11%) in a subcutaneous B16F10 murine melanoma model despite minimal tumor accumulation upon intravenous injection. Tumors treated with KLAK-MCP1 demonstrated reduced intratumor CCR2 expression and altered infiltration of TAMs and CTLs as evidenced by immunohistochemical and flow cytometric analysis. These studies highlight the potential application of CCR2-targeted nanotherapeutic micelles in cancer treatment. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Trac, Noah AU - Trac N AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States. FAU - Chen, Leng-Ying AU - Chen LY AD - Lawrence J. Ellison Institute for Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States. FAU - Zhang, Ailin AU - Zhang A AD - Lawrence J. Ellison Institute for Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States. FAU - Liao, Chun-Peng AU - Liao CP AD - Lawrence J. Ellison Institute for Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States. FAU - Poon, Christopher AU - Poon C AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States. FAU - Wang, Jonathan AU - Wang J AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States. FAU - Ando, Yuta AU - Ando Y AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States. FAU - Joo, Johan AU - Joo J AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States. FAU - Garri, Carolina AU - Garri C AD - Lawrence J. Ellison Institute for Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States. FAU - Shen, Keyue AU - Shen K AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States; Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, United States. FAU - Kani, Kian AU - Kani K AD - Lawrence J. Ellison Institute for Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States; Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, United States. FAU - Gross, Mitchell E AU - Gross ME AD - Lawrence J. Ellison Institute for Transformative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States; Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, United States. FAU - Chung, Eun Ji AU - Chung EJ AD - Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, United States; Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, United States; Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States; Division of Nephrology and Hypertension, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States; Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, United States; Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States. Electronic address: eunchung@usc.edu. LA - eng GR - DP2 DK121328/DK/NIDDK NIH HHS/United States GR - R00 HL124279/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20201001 PL - Netherlands TA - J Control Release JT - Journal of controlled release : official journal of the Controlled Release Society JID - 8607908 RN - 0 (Ccr2 protein, mouse) RN - 0 (Micelles) RN - 0 (Peptides) RN - 0 (Receptors, CCR2) SB - IM MH - Animals MH - Mice MH - Micelles MH - Monocytes MH - *Neoplasms MH - Peptides MH - *Receptors, CCR2 MH - Tumor Microenvironment PMC - PMC8491563 MID - NIHMS1635933 OTO - NOTNLM OT - CCR2 OT - Cancer OT - Micelle OT - Peptide OT - Tumor-associated macrophage EDAT- 2020/10/05 06:00 MHDA- 2021/07/08 06:00 PMCR- 2022/01/10 CRDT- 2020/10/04 20:23 PHST- 2020/07/07 00:00 [received] PHST- 2020/09/18 00:00 [revised] PHST- 2020/09/29 00:00 [accepted] PHST- 2020/10/05 06:00 [pubmed] PHST- 2021/07/08 06:00 [medline] PHST- 2020/10/04 20:23 [entrez] PHST- 2022/01/10 00:00 [pmc-release] AID - S0168-3659(20)30570-8 [pii] AID - 10.1016/j.jconrel.2020.09.054 [doi] PST - ppublish SO - J Control Release. 2021 Jan 10;329:614-623. doi: 10.1016/j.jconrel.2020.09.054. Epub 2020 Oct 1.