1
|
Han X, Yang J, Zeng F, Weng J, Zhang Y, Peng Q, Shen L, Ding S, Liu K, Gao Y. Programmable Synthetic Protein Circuits for the Identification and Suppression of Hepatocellular Carcinoma. MOLECULAR THERAPY-ONCOLYTICS 2020; 17:70-82. [PMID: 32322664 PMCID: PMC7160531 DOI: 10.1016/j.omto.2020.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 03/24/2020] [Indexed: 12/02/2022]
Abstract
Precisely identifying and killing tumor cells are diligent pursuits in oncotherapy. Synthesized gene circuits have emerged as an intelligent weapon to solve these problems. Gene circuits based on post-transcriptional regulation enable a faster response than systems based on transcriptional regulation, which requires transcription and translation, showing superior safety. In this study, synthetic-promoter-free gene circuits possessing two control layers were constructed to improve the specific recognition of tumor cells. Using split-TEV, we designed and verified the basic control layer of protein-protein interaction (PPI) sensing. Another orthogonal control layer was built to sense specific proteins. Two layers were integrated to generate gene circuits sensing both PPI and specific proteins, forming 10 logic gates. To demonstrate the utility of this system, the circuit was engineered to sense alpha-fetoprotein (AFP) expression and the PPI between YAP and 14-3-3σ, the matching profile of hepatocellular carcinoma (HCC). Gene-circuit-loaded cells distinguished HCC from other cells and released therapeutic antibodies, exhibiting in vitro and in vivo therapeutic effects.
Collapse
Affiliation(s)
- Xu Han
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Jiong Yang
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China
| | - Fanhong Zeng
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Jun Weng
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Yue Zhang
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Qing Peng
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Li Shen
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Shigang Ding
- Department of Gastroenterology, Peking University Third Hospital, Beijing, China
| | - Kaiyu Liu
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Yi Gao
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, State Key Laboratory of Organ Failure Research, Co-Innovation Center for Organ Failure Research, Southern Medical University, Guangzhou, China
| |
Collapse
|
2
|
Kim YY, Bang Y, Lee AH, Song YK. Multivalent Traptavidin-DNA Conjugates for the Programmable Assembly of Nanostructures. ACS NANO 2019; 13:1183-1194. [PMID: 30654610 DOI: 10.1021/acsnano.8b06170] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Here, we explore the extended utility of two important functional biomolecules, DNA and protein, by hybridizing them through avidin-biotin conjugation. We report a simple yet scalable technique of successive magnetic separations to synthesize traptavidin-DNA conjugates with four distinct DNA binding sites that can be used as a supramolecular building block for programmable assembly of nanostructures. Using this nanoassembly platform, we fabricate several different plasmonic nanostructures with various metallic as well as semiconductor nanoparticles in predetermined ways. We also use the platform to construct dendrimer nanostructures using valency-controlled traptavidin-DNA conjugates in a programmable manner. These results suggest that our protein-DNA supramolecular building blocks would make a significant contribution to the assembly of multicomponent and complex nanostructures for numerous contemporary and future applications from molecular imaging to drug delivery.
Collapse
Affiliation(s)
- Young-Youb Kim
- Graduate School of Convergence Science and Technology , Seoul National University , Seoul 08826 , South Korea
| | - Yongbin Bang
- Graduate School of Convergence Science and Technology , Seoul National University , Seoul 08826 , South Korea
| | - Ah-Hyoung Lee
- Graduate School of Convergence Science and Technology , Seoul National University , Seoul 08826 , South Korea
| | - Yoon-Kyu Song
- Graduate School of Convergence Science and Technology , Seoul National University , Seoul 08826 , South Korea
- Advanced Institutes of Convergence Technology , Suwon , Gyeonggi-do 16229 , South Korea
- Inter-university Semiconductor Research Center (ISRC) , Seoul National University , Seoul 08826 , South Korea
| |
Collapse
|