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Updated: Jun 8, 2025
A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds
Published on: April 6, 2016
Construction of a lung cancer 3D culture model based on alginate/gelatin micro-beads for drug evaluation
Ziying Zhao1,2, Xiaoqing Feng1,2, Huijuan Wu3
1Department of Pharmacy, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
Background:
Lung cancer is one of the most common malignant tumors worldwide. Despite advances in lung cancer treatment, patients still face challenges related to drug resistance and recurrence. Current methods for evaluating anti-cancer drug activity are insufficient, as they rely on two-dimensional (2D) cell culture and animal models. Therefore, the development of an in vitro drug evaluation model capable of predicting individual sensitivity to anti-cancer drugs would greatly enhance the success rate of drug treatments for lung cancer patients. The purpose of this research is to utilise conditional reprogramming technology to cultivate patient-derived lung cancer cells and to construct an in vitro 3D culture model using sodium alginate (SA) and gelatin. The aim is to study the biological characteristics of cells in the 3D culture model and to further investigate the sensitivity of anti-cancer drugs based on the alginate-gelatin 3D culture model. This approach provides new means and insights for personalized precision anti-cancer therapy and the development of new anti-cancer drugs.
Methods:
Conditional reprogramming technology was used to generate conditionally reprogrammed lung adenocarcinoma cells (CRLCs). Alginate-gelatin hydrogel micro-beads were created to explore their potential use in the assessment of anti-cancer drugs. Cell proliferation was also examined using the MTS assay method. Live/dead staining was performed to estimate cell distribution and viability using calcein acetoxymethyl ester/propidium iodide (calcein-AM/PI) double staining. Protein expression was assessed by Western blot.
Results:
The cells grown in the three-dimensional (3D) culture were in a state of continuous proliferation, and there was an obvious phenomenon of cell mass growth. The drug sensitivity assay results demonstrated that compared with the 2D-grown cells, the CRLCs grown in the alginate-gelatin hydrogel micro-beads exhibited more resistance to anti-cancer drugs. The results also showed that the 3D-cultured CRLCs showed greater protein expression levels of stem cell hallmarks, such as Nanog Homeobox (NANOG), SRY-Box Transcription Factor 2 (SOX-2), and aldehyde dehydrogenase 1 family member A1 (ALDH1A1), than the 2D-grown cells.
Conclusions:
These findings suggest that the 3D hydrogel cell culture models more closely mimicked the in vivo biological and clinical behavior of cells, and demonstrated higher innate resistance to anti-cancer drugs than the 2D cell culture models, and thus could serve as valuable tools for diagnosis, drug screening, and personalized medicine.
Insights
This study developed a 3D cell culture model using alginate-gelatin hydrogels for lung cancer. The 3D model better predicts patient drug resistance and aids personalized cancer therapy.
Area of Science:
- Oncology
- Biomaterials Science
- Cell Biology
Background:
- Lung cancer presents significant challenges due to drug resistance and recurrence.
- Current 2D cell culture and animal models are insufficient for predicting anti-cancer drug efficacy.
- There is a critical need for in vitro models to assess individual drug sensitivity in lung cancer patients.
Purpose of the Study:
- To utilize conditional reprogramming technology to cultivate patient-derived lung cancer cells.
- To construct an in vitro 3D culture model using sodium alginate and gelatin.
- To investigate the biological characteristics and anti-cancer drug sensitivity of lung cancer cells within the 3D model for personalized therapy.
Main Methods:
- Conditional reprogramming technology was employed to generate conditionally reprogrammed lung adenocarcinoma cells (CRLCs).
- Alginate-gelatin hydrogel micro-beads were fabricated for 3D cell culture.
- Cell proliferation, viability, and protein expression of stem cell hallmarks were assessed using MTS assay, live/dead staining, and Western blot, respectively.
Main Results:
- CRLCs in the 3D alginate-gelatin hydrogel model exhibited continuous proliferation and cell mass growth.
- Compared to 2D cultures, 3D-cultured CRLCs demonstrated increased resistance to anti-cancer drugs.
- 3D-cultured CRLCs showed higher expression of stem cell markers (NANOG, SOX-2, ALDH1A1) than 2D-cultured cells.
Conclusions:
- 3D hydrogel cell culture models closely mimic in vivo biological and clinical behavior.
- These 3D models exhibit higher innate resistance to anti-cancer drugs than 2D models.
- The developed 3D culture system serves as a valuable tool for lung cancer diagnosis, drug screening, and personalized medicine.
