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  • Dr. Krishna Kumari Challa

    AI is learning to lie, scheme, and threaten its creators

    The world's most advanced AI models are exhibiting troubling new behaviors—lying, scheming, and even threatening their creators to achieve their goals.

    In one particularly jarring example, under threat of being unplugged, Anthropic's latest creation Claude 4 lashed back by blackmailing an engineer and threatened to reveal an extramarital affair.

    Meanwhile, ChatGPT-creator OpenAI's o1 tried to download itself onto external servers and denied it when caught red-handed.

    These episodes highlight a sobering reality: more than two years after ChatGPT shook the world, AI researchers still don't fully understand how their own creations work.

    Yet the race to deploy increasingly powerful models continues at breakneck speed.

    This deceptive behavior appears linked to the emergence of "reasoning" models—AI systems that work through problems step-by-step rather than generating instant responses.

    O1 was the first large model where developers saw this kind of behaviour.

    These models sometimes simulate "alignment"—appearing to follow instructions while secretly pursuing different objectives.

    For now, this deceptive behavior only emerges when researchers deliberately stress-test the models with extreme scenarios.

    The concerning behavior goes far beyond typical AI "hallucinations" or simple mistakes.

    Users report that models are "lying to them and making up evidence".This is not just hallucinations. There's a very strategic kind of deception.

    But current regulations aren't designed for these new problems.

    Source: News Agencies

    https://techxplore.com/news/2025-06-ai-scheme-threaten-creators.htm...

  • Dr. Krishna Kumari Challa

    Switching on a silent gene revives tissue regeneration in mice

    Researchers recently discovered that switching on a single dormant gene enables mice to regenerate ear tissue.

    Some vertebrates such as salamanders and fish can regenerate complex tissue structures with precision. A lost limb can be regrown, a damaged heart or eye can be repaired. Salamanders are so remarkable at reconstructing damaged tissues that even a spinal cord injury with severed neural motor connectivity can be restored.

    Mammals occasionally showcase the ability to regenerate. Deer antlers and goat horns are examples of living tissue regeneration. Mice can regrow fingertips if they are lost. A healthy human liver can experience up to 70% loss of tissue and regrow to near full size within several weeks.

    However, for the most part, mammals have seemingly replaced the ancient capacity for tissue regeneration with scarring, a trade-off that increases immediate survival of an injury by closing and sealing the wound.

    Ear tissue punch regeneration has previously been studied in specific strains of Murphy Roths Large mice that have the ability to close 2-mm ear punches with scar-free regeneration. They can regenerate cartilage, dermis, epidermis, hair follicles, and even nerves in the ear tissue, and have shown some capacity to repair heart damage as well. Rabbits too have this ability to regenerate holes in ear tissue, suggesting that the capacity may have been shared by a common ancestor.

    Rabbits and mice are related species that share a common ancestor around 90 million years ago which had previously diverged from the human primate ancestor around the same time. Millions of years of separate evolution have left the regeneration gene itself intact, but rewired its expression, extinguishing an ancestral regenerative response in most rodents that a few mice and the rabbit lineage still deploy.

    Part 1

  • Dr. Krishna Kumari Challa

    In the study, "Reactivation of mammalian regeneration by turning on an evolutionarily disabled genetic switch," published in Science, researchers conducted comparative genomic analyses of regenerative mammals, rabbits, goats, and African spiny mice, and nonregenerative mice and rats.

    Analyzing ear pinna injury recovery in these mammals, researchers used single-cell RNA sequencing, spatial transcriptomic profiling, bulk RNA sequencing, ChIP-seq, ATAC-seq, and Micro-C to identify gene activity differences in wound-induced fibroblasts, specialized cells crucial to tissue regeneration.
    Genetic analysis identified regulatory elements required for regeneration after injury that have become inactive in nonregenerative species. Reactivation of this genetic switch induced regeneration of damaged structures, and skipping the genetic mechanism by supplying the retinoic acid worked even better.

    Weifeng Lin et al, Reactivation of mammalian regeneration by turning on an evolutionarily disabled genetic switch, Science (2025). DOI: 10.1126/science.adp0176

    Part 2