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全基因组移植(WGT)技术
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起死回生!科学家利用人工合成基因组复活死亡细胞,创建出“僵尸细胞”,为合成生物学打开新大门
生物世界· 2026-03-25 04:36
Core Viewpoint - The research led by J. Craig Venter demonstrates the revival of "dead cells" through whole genome transplantation, creating what are termed "zombie cells" [3][4]. Group 1: Research Methodology - The study involved the use of mitomycin C (MMC) to inactivate the genome of Mycoplasma capricolum, rendering it "dead" before transplanting a synthetic genome from Mycoplasma mycoides [4][7]. - This approach eliminates the reliance on antibiotic resistance markers, which previously led to false positives due to homologous recombination in recipient cells [4][10]. - The new method allows for the transplantation of synthetic genomes into dead cells while maintaining their transcription and translation systems, thus enabling the revival of cellular functions [7][8]. Group 2: Efficiency and Breakthroughs - The new technique significantly enhances the efficiency of whole genome transplantation, achieving a success rate of one viable transplant cell from every 288 recipient cells, compared to the traditional method requiring 150 million cells for one successful transplant [9]. - This research marks the first instance of assembling a living synthetic bacterial cell from non-living components, overcoming the major barrier of false positives in genome transplantation [10]. - The findings suggest that any cell with a complete transcription and translation system could theoretically serve as a recipient for whole genome transplantation, paving the way for engineered cells with specific functions for applications in drug production, gene therapy, environmental remediation, and biofuel production [10].