PMID- 26057701 OWN - NLM STAT- MEDLINE DCOM- 20160626 LR - 20181113 IS - 1936-086X (Electronic) IS - 1936-0851 (Print) IS - 1936-0851 (Linking) VI - 9 IP - 7 DP - 2015 Jul 28 TI - Engineered Nanostructures of Haptens Lead to Unexpected Formation of Membrane Nanotubes Connecting Rat Basophilic Leukemia Cells. PG - 6738-46 LID - 10.1021/acsnano.5b02270 [doi] AB - A recent finding reports that co-stimulation of the high-affinity immunoglobulin E (IgE) receptor (FcepsilonRI) and the chemokine receptor 1 (CCR1) triggered formation of membrane nanotubes among bone-marrow-derived mast cells. The co-stimulation was attained using corresponding ligands: IgE binding antigen and macrophage inflammatory protein 1alpha (MIP1 alpha), respectively. However, this approach failed to trigger formation of nanotubes among rat basophilic leukemia (RBL) cells due to the lack of CCR1 on the cell surface (Int. Immunol. 2010, 22 (2), 113-128). RBL cells are frequently used as a model for mast cells and are best known for antibody-mediated activation via FcepsilonRI. This work reports the successful formation of membrane nanotubes among RBLs using only one stimulus, a hapten of 2,4-dinitrophenyl (DNP) molecules, which are presented as nanostructures with our designed spatial arrangements. This observation underlines the significance of the local presentation of ligands in the context of impacting the cellular signaling cascades. In the case of RBL, certain DNP nanostructures suppress antigen-induced degranulation and facilitate the rearrangement of the cytoskeleton to form nanotubes. These results demonstrate an important scientific concept; engineered nanostructures enable cellular signaling cascades, where current technologies encounter great difficulties. More importantly, nanotechnology offers a new platform to selectively activate and/or inhibit desired cellular signaling cascades. FAU - Li, Jie-Ren AU - Li JR AD - daggerDepartment of Chemistry, University of California, Davis, California 95616, United States. FAU - Ross, Shailise S AU - Ross SS AD - daggerDepartment of Chemistry, University of California, Davis, California 95616, United States. FAU - Liu, Yang AU - Liu Y AD - daggerDepartment of Chemistry, University of California, Davis, California 95616, United States. FAU - Liu, Ying X AU - Liu YX AD - daggerDepartment of Chemistry, University of California, Davis, California 95616, United States. FAU - Wang, Kang-Hsin AU - Wang KH AD - daggerDepartment of Chemistry, University of California, Davis, California 95616, United States. FAU - Chen, Huan-Yuan AU - Chen HY AD - double daggerDepartment of Dermatology, School of Medicine, University of California, Davis, Sacramento, California 95817, United States. AD - section signInstitute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, ROC. FAU - Liu, Fu-Tong AU - Liu FT AD - double daggerDepartment of Dermatology, School of Medicine, University of California, Davis, Sacramento, California 95817, United States. AD - section signInstitute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, ROC. FAU - Laurence, Ted A AU - Laurence TA AD - parallelLawrence Livermore National Laboratory, Livermore, California 94550, United States. FAU - Liu, Gang-Yu AU - Liu GY AD - daggerDepartment of Chemistry, University of California, Davis, California 95616, United States. LA - eng GR - R01 AR056343/AR/NIAMS NIH HHS/United States GR - R21 CA176850/CA/NCI NIH HHS/United States GR - 1R21CA176850-01/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150618 PL - United States TA - ACS Nano JT - ACS nano JID - 101313589 RN - 0 (Haptens) SB - IM MH - Animals MH - Basophils/*ultrastructure MH - Cell Line, Tumor MH - Cell Membrane Structures/drug effects/*ultrastructure MH - Haptens/*chemistry/pharmacology MH - Nanostructures/*chemistry MH - Rats PMC - PMC4758354 MID - NIHMS758956 OTO - NOTNLM OT - atomic force microscopy (AFM) OT - haptens OT - mast cells OT - membrane nanotubes OT - particle lithography OT - rat basophilic leukemia (RBL) cells OT - scanning electron microscopy (SEM) COIS- Conflict of Interest: The authors declare no competing financial interest. EDAT- 2015/06/10 06:00 MHDA- 2016/06/28 06:00 PMCR- 2016/02/18 CRDT- 2015/06/10 06:00 PHST- 2015/06/10 06:00 [entrez] PHST- 2015/06/10 06:00 [pubmed] PHST- 2016/06/28 06:00 [medline] PHST- 2016/02/18 00:00 [pmc-release] AID - 10.1021/acsnano.5b02270 [doi] PST - ppublish SO - ACS Nano. 2015 Jul 28;9(7):6738-46. doi: 10.1021/acsnano.5b02270. Epub 2015 Jun 18.