Synthetic biology stories

Sep 4, 2026

Scientists expand genetic alphabet from 4 to 8 letters in functioning system

UC San Diego researchers demonstrated that a key cellular enzyme can accurately read an eight-letter genetic alphabet, doubling the four DNA letters used by all known life on Earth, with potential applications in synthetic biology and medicine.

Sep 4, 20262 sources

Jul 25, 2026

Engineered probiotic bacteria show promise in boosting immune response against pancreatic cancer

Researchers have developed engineered probiotic bacteria designed to overcome the 'cold' tumor microenvironment in pancreatic cancer, potentially enhancing the effectiveness of immunotherapy treatments for this difficult-to-treat disease.

Jul 25, 20261 source

Top claims

▪Researchers at the University of California San Diego demonstrated that Escherichia coli RNA polymerase can accurately read and transcribe an expanded, eight-letter genetic alphabet
▪The study demonstrating the transcription of the eight-letter genetic alphabet was published on September 2, 2026, in Nature Communications and led by Dong Wang, PhD, of UC San Diego
▪The structural snapshots revealed that Escherichia coli RNA polymerase recognizes synthetic DNA letters through the same biochemical and structural signals as natural base pairs

Subtopics

Drug Approval and Clinical Trials2 Cancer immunotherapy1 Genetic engineering1 Gut microbiome1 Interleukin-21 Lifestyle, Wellness and Nutrition1 Molecular biology1 Pancreatic cancer1 Probiotic bacteria1 Probiotics1

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