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Goudar VS, Koduri MP, Ta YNN, Chen Y, Chu LA, Lu LS, Tseng FG. Impact of a Desmoplastic Tumor Microenvironment for Colon Cancer Drug Sensitivity: A Study with 3D Chimeric Tumor Spheroids. ACS Appl Mater Interfaces 2021; 13:48478-48491. [PMID: 34633791 DOI: 10.1021/acsami.1c18249] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Three-dimensional (3D) spheroid culture provides opportunities to model tumor growth closer to its natural context. The collagen network in the extracellular matrix supports autonomic tumor cell proliferation, but its presence and role in tumor spheroids remain unclear. In this research, we developed an in vitro 3D co-culture model in a microwell 3D (μ-well 3D) cell-culture array platform to mimic the tumor microenvironment (TME). The modular setup is used to characterize the paracrine signaling molecules and the role of the intraspheroidal collagen network in cancer drug resistance. The μ-well 3D platform is made up of poly(dimethylsiloxane) that contains 630 round wells for individual spheroid growth. Inside each well, the growth surface measured 500 μm in diameter and was functionalized with the amphiphilic copolymer. HCT-8 colon cancer cells and/or NIH3T3 fibroblasts were seeded in each well and incubated for up to 9 days for TME studies. It was observed that NIH3T3 cells promoted the kinetics of tumor organoid formation. The two types of cells self-organized into core-shell chimeric tumor spheroids (CTSs) with fibroblasts confined to the shell and cancer cells localized to the core. Confocal microscopy analysis indicated that a type-I collagen network developed inside the CTS along with increased TGF-β1 and α-SMA proteins. The results were correlated with a significantly increased stiffness in 3D co-cultured CTS up to 52 kPa as compared to two-dimensional (2D) co-culture. CTS was more resistant to 5-FU (IC50 = 14.0 ± 3.9 μM) and Regorafenib (IC50 = 49.8 ± 9.9 μM) compared to cells grown under the 2D condition 5-FU (IC50 = 12.2 ± 3.7 μM) and Regorafenib (IC50 = 5.9 ± 1.9 μM). Targeted collagen homeostasis with Sclerotiorin led to damaged collagen structure and disrupted the type-I collagen network within CTS. Such a treatment significantly sensitized collagen-supported CTS to 5-FU (IC50 = 4.4 ± 1.3 μM) and to Regorafenib (IC50 = 0.5 ± 0.2 μM). In summary, the efficient formation of colon cancer CTSs in a μ-well 3D culture platform allows exploration of the desmoplastic TME. The novel role of intratumor collagen quality as a drug sensitization target warrants further investigation.
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Affiliation(s)
- Venkanagouda S Goudar
- Department of Engineering and System Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Manohar Prasad Koduri
- International Intercollegiate Ph.D. Program, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Department of Mechanical, Materials, and Aerospace, School of Engineering, University of Liverpool, Harrison Hughes Building, Liverpool L693GH, U.K
| | - Yen-Nhi Ngoc Ta
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Yunching Chen
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Li-An Chu
- Department of Biomedical and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Brain Research Center, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Long-Sheng Lu
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan, ROC
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan, ROC
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan, ROC
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan, ROC
| | - Fan-Gang Tseng
- Department of Engineering and System Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- International Intercollegiate Ph.D. Program, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan, ROC
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Corrêia Gomes D, Takahashi JA. Sequential fungal fermentation-biotransformation process to produce a red pigment from sclerotiorin. Food Chem 2016; 210:355-61. [PMID: 27211658 DOI: 10.1016/j.foodchem.2016.04.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 06/02/2015] [Accepted: 04/16/2016] [Indexed: 11/23/2022]
Abstract
The fungus Penicillium sclerotiorum produces sclerotiorin, an orange compound closely related to the useful food coloring pigments produced by Monascus species. The high productivity, together with several biological activities reported for sclerotiorin highlights its potential application in food industry. In this work, sclerotiorin was obtained as the major metabolite produced in liquid fermentation by P. sclerotiorum standing for 30% of the fungal dry extract. Modulation of sclerotiorin color was accomplished by biotransformation using Beauveria bassiana generating a red derivative with 13.8% yield. Color modification was caused by fungal-mediated substitution of oxygen by nitrogen in the pyrone ring changing the molecule's chromophore. A derivative, 1-methyl sclerotiorin was synthesized from sclerotiorin using diazomethane and fed to B. bassiana. In this case, substituent at C-1 avoided heteroatom substitution. Sclerotiorin derivatives obtained in the present show the great potential of sclerotiorin derivatives as food colorants.
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