Wed Nov 20 09:28:33 UTC 2024: **Cells Show Capacity for ‘Learning,’ Challenging Traditional Understanding of Intelligence**
**Cambridge, MA** – A groundbreaking study published in *Current Biology* reveals that single cells, including those within the human body, exhibit a form of learning previously thought exclusive to complex organisms with brains. Researchers from Harvard Medical School and the Centre for Genomic Regulation have demonstrated that cells can undergo habituation—a simple type of learning where the response to a repeated stimulus diminishes.
This finding challenges the traditional view of learning and memory, suggesting these processes may be fundamental to life at its most basic level. Using computer models, the researchers analyzed molecular networks within single-celled organisms like ciliates and mammalian cells. They identified four molecular networks displaying the hallmarks of habituation, including two distinct forms of memory storage, one of which decays rapidly—a crucial element of habituation.
“This opens up an exciting new mystery,” said senior author Jeremy Gunawardena, an associate professor of systems biology at Harvard Medical School. “How do cells without brains manage something so complex?”
The discovery has significant implications for our understanding of cellular processes, potentially offering new insights into phenomena like cancer cell drug resistance and antibiotic resistance in bacteria, where cells appear to adapt to their environments. While further research using real-world biological data is needed to confirm these possibilities, the study represents a significant leap forward in our understanding of learning and memory at the cellular level. The researchers believe that this work may pave the way for novel therapeutic strategies by targeting cellular learning mechanisms.
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