Reporting in Science, researchers have managed to use CRISPR to track proliferating cancer cells as they metastasise in real-time. Jonathan Weissman from the Whitehead Institute, USA and co-workers engineered lung cancer cells to express Cas9, luciferase, and three pairs of fluorescent genes and gRNAs targeting those genes. When these cells were transplanted to mice lungs and proliferated, new indels were randomly formed in each generation, generating a new fluorescent colour that could be tracked in vivo as metastasis progressed.
India has not yet decided whether to allow CRISPR and other gene-editing techniques to develop better crops, but now several researchers urge the government to approve the technologies. The scientists believe that gene editing can solve problems of decreasing agricultural productivity, loss of arable land, and climate change issues.