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Advaxis initiates ADXS11-001 clinical trial for cervix cancer

August 30, 2015

Because of the challenges associated with engineering Saccharopolyspora erythraea, researchers have hoped to achieve the complete production of erythromycin A using E. coli. More than 20 enzymes must work in concert to create the erythromycin A molecule. This genetic and biochemical complexity makes synthesis notoriously hard. Previous research had reported manufacture of erythromycin A intermediates in E. coli but not the final product.

"To transfer and reconstitute these biosynthetic pathways is very difficult. In fact, erythromycin A poses nearly every challenge that must be addressed in the quest for complex heterologous biosynthesis of natural products," Pfeifer said.

He noted that the Tufts researchers followed a direction that was different from other groups. The Tufts team focused on reconstituting and ultimately manipulating the compound's original biosynthetic pathway rather than using analogous enzymes extracted from analogous pathways. The research team included Haoran Zhang, doctoral student in chemical engineering; Yong Wang, former postdoctoral associate now at East China University of Science & Technology; Jiequn Wu, a visiting doctoral student from East China University of Science & Technology, and Karin Skalina, a Tufts senior who is studying chemical engineering.

Source: Tufts University