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Three-Dimensional Silk Fibroin/Chitosan Based Microscaffold for Anticancer Drug Screening
Hui Niu1,2, Jiarui Xiao2, Xiaoli Lou1,2
1Department of Pathology, Second Affiliated Hospital of Soochow University, Suzhou, China.
Frontiers in Bioengineering and Biotechnology
|March 30, 2022
Summary
This study developed a 3D silk fibroin/chitosan microscaffold for cancer research. This biocompatible scaffold enhances anticancer drug sensitivity testing, offering a more accurate in vitro model for drug development.
Area of Science:
- Biomaterials Science
- Cancer Biology
- Drug Discovery
Background:
- Traditional 2D cell cultures inadequately mimic the tumor microenvironment, limiting accurate prediction of anticancer drug efficacy.
- Three-dimensional (3D) culture systems offer a more physiologically relevant platform for cancer research and drug screening.
Purpose of the Study:
- To fabricate and characterize novel 3D silk fibroin (SF) and chitosan (CS) microscaffolds for creating a biomimetic tumor microenvironment.
- To evaluate the biocompatibility and drug sensitivity of cancer cell lines cultured on these 3D microscaffolds.
Main Methods:
- Fabrication of SF/CS microscaffolds using sodium tripolyphosphate (TPP) or 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) as cross-linkers.
- Physicochemical characterization using SEM, XPS, FTIR, water absorption, and swelling ratio analysis.
- Biocompatibility and drug sensitivity assays using LoVo and MDA-MB-231 cancer cell lines.
Main Results:
- EDC-cross-linked scaffolds exhibited superior pore structure and interconnection compared to TPP-cross-linked scaffolds.
- The EDC-cross-linked SF/CS microscaffolds demonstrated high water absorption (~1000%) and swelling (~72%) ratios, promoting cell adhesion and growth.
- Cancer cells cultured on 3D scaffolds showed enhanced sensitivity to chemotherapeutic drugs, especially at low doses, compared to 2D cultures.
Conclusions:
- The developed SF/CS 3D microscaffold provides a promising in vitro platform for accurate anticancer drug efficacy prediction.
- This biomimetic system enhances drug sensitivity screening, potentially improving preclinical drug development pipelines.
