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Marina Biotech announced last week that it has closed its Cambridge, Mass., operations and is consolidating all of its research and development activities at its Bothell, Wash. headquarters.

The drug uses orally delivered attenuated Escherichia coli to transcribe shRNAs targeting beta-catenin, an oncogene that plays a role in the development of colorectal polyps that characterize the disease.

The drug is currently being tested in a phase Ia/IIb study.

Through the transaction, MDRNA will gain Cequent's orally delivered transkingdom RNAi technology, which involves using attenuated Escherichia coli to transcribe therapeutic shRNAs.

The data, which were presented at this year's American Association for Cancer Research annual meeting, represent initial findings from the company's in-house effort to knock down multiple genes simultaneously and a collaboration related to multi-drug resistance of cancer cells.

Novamax has begun a phase III trial of its SARS-CoV-2 vaccine, according to the New York Times.

Vox reports that the Trump Administration may limit student visas for individuals from some countries to two years.

The governor of New York says the state will conduct its own review of any SARS-CoV-2 vaccine, NPR reports.

This week in Science: Neanderthal Y chromosomes replaced by Homo sapiens Y chromosomes, and more.