Herein, A549 tumor cell proliferation was confirmed to be positively dependent on the concentration of Fe3+#nbsp;or transferrin (Tf). Gd@C82#nbsp;(OH)22#nbsp;or C60#nbsp;(OH)22#nbsp;effectively inhibited the iron uptake and the subsequent proliferation of A549 cells. The conformational changes of Tf mixed with FeCl3#nbsp;, GdCl3#nbsp;, C60#nbsp;(OH)22#nbsp;or Gd@C82#nbsp;(OH)22#nbsp;were obtained by SAXS. The results demonstrate that Tf homodimers can be decomposed into monomers in the presence of FeCl3#nbsp;, GdCl3#nbsp;or C60#nbsp;(OH)22#nbsp;, but associated into tetramers in the presence of Gd@C82#nbsp;(OH)22#nbsp;. The larger change of SAXS shapes between Tf+C60#nbsp;(OH)22#nbsp;and Tf+FeCl3#nbsp;implies that C60#nbsp;(OH)22#nbsp;is bound to Tf, blocking the iron-binding site. The larger deviation of the SAXS shape from a possible crystal structure of Tf tetramer implies that Gd@C82#nbsp;(OH)22#nbsp;is bound to the Tf tetramer, thus disturbing iron transport. This study well explains the inhibition mechanism of Gd@C82#nbsp;(OH)22#nbsp;and C60#nbsp;(OH)22#nbsp;on the iron uptake and the proliferation of A549 tumor cells and highlights the specific interactions of a nanomedicine with the target biomolecules in cancer therapy.
Related researches 41 articles
![<strong>Exploring the World of Fullerenols: A Deep Dive into Their Potential Medical Use</strong>](https://biofullerene.com/wp-content/uploads/2024/03/20-years-research-help-with-oncology-356x356.webp)
![Biological and biocompatible characteristics of fullerenols nanomaterials for tissue engineering](https://biofullerene.com/wp-content/uploads/2022/12/photo_2022-12-29_12-06-18-500x317.jpg)
![Small size fullerenol nanoparticles suppress lung metastasis of breast cancer cell by disrupting actin dynamics](https://biofullerene.com/wp-content/uploads/2022/11/ImageForArticle_4620-500x333.jpg)
![Fullerenol C60(OH)24 effects on antioxidative enzymes activity in irradiated human erythroleukemia cell line](https://biofullerene.com/wp-content/uploads/2022/11/212206-356x356.png)
![Antioxidant properties of fullerenol C60(OH)24 in rat kidneys, testes, and lungs treated with doxorubicin](https://biofullerene.com/wp-content/uploads/2022/11/cancer-icon-2797418_-356x356.png)
![Epigenetic modulation of human breast cancer by metallofullerenol nanoparticles: in vivo treatment and in vitro analysis](https://biofullerene.com/wp-content/uploads/2022/11/targeted-drug-delive-356x356.jpg)
![AFM-based study of fullerenol (C60(OH)24)-induced changes of elasticity in living SMCC-7721 cells](https://biofullerene.com/wp-content/uploads/2022/11/depositphotos_352541-356x356.jpg)
![Fullerenes and their derivatives as inhibitors of tumor necrosis factor-α with highly promoted affinities](https://biofullerene.com/wp-content/uploads/2022/11/0005-009-poluchenie--475x356.jpg)
![Fullerenol/doxorubicin nanocomposite mitigates acute oxidative stress and modulates apoptosis in myocardial tissue](https://biofullerene.com/wp-content/uploads/2022/11/heartAttackCardiacAr-500x346.jpg)
![Hydrophobic Patch of Ubiquitin is Important for its Optimal Activation by Ubiquitin Activating Enzyme E1](https://biofullerene.com/wp-content/uploads/2022/11/1725885-500x263.png)
![Biocompatible [60]/[70] Fullerenols: Potent Defense against Oxidative Injury Induced by Reduplicative Chemotherapy](https://biofullerene.com/wp-content/uploads/2022/11/istockphoto-65584859-356x356.jpg)
![Aspartic acid derivatized hydroxylated fullerenes as drug delivery vehicles for docetaxel: an explorative study](https://biofullerene.com/wp-content/uploads/2022/11/1200px-L-Asparaginsu-500x295.png)
![Study of morphological and mechanical features of multinuclear and mononuclear SW480 cells by atomic force microscopy](https://biofullerene.com/wp-content/uploads/2022/11/5AawkyZS8dY7T9C3AZwH-474x356.jpg)
![Molecular mechanism of Gd@C 82(OH) 22 increasing collagen expression: Implication for encaging tumor](https://biofullerene.com/wp-content/uploads/2022/11/4264665-356x356.png)
![Investigation of fullerenol-induced changes in poroelasticity of human hepatocellular carcinoma by AFM-based creep tests](https://biofullerene.com/wp-content/uploads/2022/11/icon-research2x-356x356.png)
![Aspartic acid derivatized hydroxylated fullerenes as drug delivery vehicles for docetaxel: an explorative study](https://biofullerene.com/wp-content/uploads/2022/11/4970457-middle-500x202.png)
![Study of morphological and mechanical features of multinuclear and mononuclear SW480 cells by atomic force microscopy](https://biofullerene.com/wp-content/uploads/2022/11/360_F_337277306_bOwr-500x333.jpg)
![Identification differential behavior of Gd@C 82(OH) 22 upon interaction with serum albumin using spectroscopic analysis](https://biofullerene.com/wp-content/uploads/2022/11/market-research-icon-356x356.png)
![Mono-fullerenols modulating cell stiffness by perturbing actin bundling](https://biofullerene.com/wp-content/uploads/2022/11/pressure-resistance--356x356.jpg)
![Investigation of fullerenol-induced changes in poroelasticity of human hepatocellular carcinoma by AFM-based creep tests](https://biofullerene.com/wp-content/uploads/2022/11/Breast-Website-Infog-356x356.png)
![Exploring the Inhibitory and Antioxidant Effects of Fullerene and Fullerenol on Ribonuclease A](https://biofullerene.com/wp-content/uploads/2022/11/1rnu_assembly-1-356x356.jpeg)
![Hepatoprotective effect of fullerenol/doxorubicin nanocomposite in acute treatment of healthy rats](https://biofullerene.com/wp-content/uploads/2022/11/BTOB_Oxidative_Stres-356x356.png)