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Title: pH and Amphiphilic Structure Direct Supramolecular Behavior in Biofunctional Assemblies

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/ja5042429· OSTI ID:1165620
 [1];  [2];  [3];  [4];  [5];  [6]
  1. Northwestern Univ., Chicago, IL (United States). Inst. for BioNanotechnology in Medicine, Dept. of Materials Science and Engineering
  2. Northwestern Univ., Chicago, IL (United States). Inst. for BioNanotechnology in Medicine; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
  3. Northwestern Univ., Chicago, IL (United States). Inst. for BioNanotechnology in Medicine; Northwestern Univ., Chicago, IL (United States). Feinberg School of Medicine, Dept. of Medicine
  4. Northwestern Univ., Chicago, IL (United States). Feinberg School of Medicine, Dept. of Medicine
  5. Univ. of Wisconsin, Madison, WI (United States). School of Medicine and Public Health, Carbone Cancer Center and Dept. of Medicine
  6. Northwestern Univ., Chicago, IL (United States). Inst. for BioNanotechnology in Medicine, Dept. of Materials Science and Engineering; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry; Northwestern Univ., Chicago, IL (United States). Feinberg School of Medicine, Dept. of Medicine

Supramolecular self-assembly offers promising new ways to control nanostructure morphology and respond to external stimuli. A pH-sensitive self-assembled system was developed to both control nanostructure shape and respond to the acidic microenvironment of tumors using self-assembling peptide amphiphiles (PAs). Here, by incorporating an oligo-histidine H6 sequence, we developed two PAs that self-assembled into distinct morphologies on the nanoscale, either as nanofibers or spherical micelles, based on the incorporation of the aliphatic tail on the N-terminus or near the C-terminus, respectively. Both cylinder and sphere-forming PAs demonstrated reversible disassembly between pH 6.0 and 6.5 upon protonation of the histidine residues in acidic solutions. These PAs were then characterized and assessed for their potential to encapsulate hydrophobic chemotherapies. The H6-based nanofiber assemblies encapsulated camptothecin (CPT) with up to 60% efficiency, a 7-fold increase in CPT encapsulation relative to spherical micelles. Additionally, pH-sensitive nanofibers showed improved tumor accumulation over both spherical micelles and nanofibers that did not change morphologies in acidic environments. We have demonstrated that the morphological transitions upon changes in pH of supramolecular nanostructures affect drug encapsulation and tumor accumulation. Lastly, our findings also suggest that these supramolecular events can be tuned by molecular design to improve the pharmacologic properties of nanomedicines.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC); National Institutes of Health (NIH); Department of Defense (DoD)
Grant/Contract Number:
AC02-06CH11357; 5U54CA151880-03; 5R01DE015920-09; W81XWH-10-1-0503
OSTI ID:
1165620
Journal Information:
Journal of the American Chemical Society, Vol. 136, Issue 42; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 137 works
Citation information provided by
Web of Science

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Cited By (30)

Sequence isomerism-dependent self-assembly of glycopeptide mimetics with switchable antibiofilm properties journal January 2019
A review on virus protein self-assembly journal November 2019
A minimal length rigid helical peptide motif allows rational design of modular surfactants journal January 2017
Host Materials Transformable in Tumor Microenvironment for Homing Theranostics journal February 2017
Controlling the Self-Assembly of Biomolecules into Functional Nanomaterials through Internal Interactions and External Stimulations: A Review journal February 2019
Impact of charge switching stimuli on supramolecular perylene monoimide assemblies journal January 2019
Self-assembly of mitochondria-specific peptide amphiphiles amplifying lung cancer cell death through targeting the VDAC1–hexokinase-II complex journal January 2019
Dual-Controlled Macroscopic Motions in a Supramolecular Hierarchical Assembly of Motor Amphiphiles journal June 2019
Recent progress in supramolecular peptide assemblies as virus mimics for cancer immunotherapy journal January 2020
Self-Assembled Fluorescent Organic Nanomaterials for Biomedical Imaging journal August 2018
Peptide self-assembly: thermodynamics and kinetics journal January 2016
Surface-assisted assembly of a histidine-rich lipidated peptide for simultaneous exfoliation of graphite and functionalization of graphene nanosheets journal January 2019
Self-Assembled Peptide-Based Nanomaterials for Biomedical Imaging and Therapy journal February 2018
pH-triggered morphological change in a self-assembling amphiphilic peptide used as an antitumor drug carrier journal January 2020
Functional Control of Peptide Amphiphile Assemblies via Modulation of Internal Cohesion and Surface Chemistry Switch journal August 2018
A photo-degradable injectable self-healing hydrogel based on star poly(ethylene glycol)- b -polypeptide as a potential pharmaceuticals delivery carrier journal January 2018
Luminescent platinum( ii ) complexes with self-assembly and anti-cancer properties: hydrogel, pH dependent emission color and sustained-release properties under physiological conditions journal January 2015
Therapeutic Peptide Amphiphile as a Drug Carrier with ATP-Triggered Release for Synergistic Effect, Improved Therapeutic Index, and Penetration of 3D Cancer Cell Spheroids journal September 2018
Controlling supramolecular polymerization through multicomponent self-assembly journal October 2016
The influence of substituents on gelation and stacking order of oligoaramid – based supramolecular networks journal January 2019
Dual‐Controlled Macroscopic Motions in a Supramolecular Hierarchical Assembly of Motor Amphiphiles journal June 2019
Ibuprofen loading and release in amphiphilic peptide FA32 and its derivatives: a coarse-grained molecular dynamics simulation study text January 2016
Synthesis and Self‐assembly of a Helical Polymer Grafted from a Foldable Polyurethane Scaffold journal October 2019
Secondary Structure-Driven Hydrogelation Using Foldable Telechelic Polymer-Peptide Conjugates journal July 2018
Supramolecular Nanofibers of Curcumin for Highly Amplified Radiosensitization of Colorectal Cancers to Ionizing Radiation journal January 2018
Peptide supramolecular materials for therapeutics journal January 2018
Ibuprofen loading and release in amphiphilic peptide FA32 and its derivatives: a coarse-grained molecular dynamics simulation study journal August 2015
Ibuprofen loading and release in amphiphilic peptide FA32 and its derivatives: a coarse-grained molecular dynamics simulation study text January 2015
Transformable Peptide Nanocarriers for Expeditious Drug Release and Effective Cancer Therapy via Cancer-Associated Fibroblast Activation journal August 2015
MMP-2-Controlled Transforming Micelles for Heterogeneic Targeting and Programmable Cancer Therapy journal January 2019

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