Related Experiment Video
Updated: Feb 16, 2026
10:13
A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
Published on: April 28, 2023
3.1K
Novel Metal Polyphenol Framework for MR Imaging-Guided Photothermal Therapy
Gaozheng Zhao1, Huihui Wu2, Ruilu Feng1
1Hefei National Laboratory for Physical Sciences at Microscale, Department of Materials Science & Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS High Magnetic Field Laboratory, University of Science and Technology of China , Hefei, 230026, China.
ACS Applied Materials & Interfaces
|January 5, 2018
Summary
This study introduces a novel iron-ellagic acid (Fe-EA) nanosystem for cancer treatment. This biocompatible agent effectively destroys tumors using photothermal therapy and aids in T2 MRI cancer imaging.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Cancer Therapy
Background:
- Photothermal therapy (PTT) is a promising cancer treatment modality.
- Developing biocompatible and effective PTT agents is crucial.
- Existing agents may have limitations in safety and biodegradability.
Purpose of the Study:
- To fabricate a novel, biocompatible nanosystem for PTT and T2-weighted magnetic resonance imaging (MRI).
- To evaluate the efficacy and safety of the nanosystem for cancer treatment.
- To explore the potential of the nanosystem for imaging-guided cancer therapy.
Main Methods:
- Fabrication of a homogeneous nanosized iron-ellagic acid (Fe-EA) framework using biosafe materials.
- In vitro and in vivo assessment of cytotoxicity and hemocompatibility.
- Evaluation of photothermal properties, including NIR light absorption and conversion efficiency.
- In vivo photothermal therapy and T2 MRI imaging studies.
Main Results:
- The Fe-EA nanosystem demonstrated no obvious cytotoxicity and good hemocompatibility.
- The nanoparticles exhibited biodegradability in response to tumor microenvironment triggers (pH and hydrogen peroxide).
- The Fe-EA nanosystem showed strong NIR absorption, effective photothermal conversion, and good stability.
- In vivo PTT achieved significant tumor ablation with no apparent toxicity.
- The Fe-EA nanosystem displayed T2 MRI imaging capability due to ferric ions.
Conclusions:
- The Fe-EA nanosystem is a promising, biocompatible agent for photothermal therapy.
- The nanosystem offers dual-modality imaging and therapeutic potential for cancer treatment.
- This work highlights the Fe-EA framework as a viable platform for imaging-guided PTT.
More Related Videos
Related Concept Videos
02:32Bonding in Metals
53.0K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
53.0K
02:37Metallic Solids
21.0K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
21.0K
03:06Alkali Metals
25.0K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
25.0K
02:51Metal-Ligand Bonds
24.5K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.5K
02:58Properties of Transition Metals
30.1K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
30.1K
00:59Gene Therapy
27.7K
Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
27.7K