The Epigenetic Regulation of Astrocytes in Memory and Cognition: Implications for the Baghmaleki Astrocytic Theory

Astrocytes, historically considered support cells in the central nervous system (CNS), are increasingly recognized as active contributors to cognitive functions including learning and memory. While genetic determinants shape astrocyte differentiation and baseline function, epigenetic mechanisms are emerging as critical modulators of astrocytic plasticity in response to environmental and experiential stimuli. This article explores the epigenetic regulation of astrocytes—particularly DNA methylation, histone modifications, and chromatin remodeling— and how these mechanisms enable long-lasting changes in gene expression that support memory consolidation and retrieval. Integrating recent findings on astrocytic epigenetic ‘memory’ and cognitive modulation, we propose a theoretical framework extending Baghmaleki’s astrocytic theory of memory and cognition. We suggest that epigenetic signatures in astrocytes not only reflect gene–environment interactions but may also underlie stable alterations associated with memory engrams and cognitive resilience. Keywords: Astrocytes, Epigenetics, Memory, Cognition, Synaptic Plasticity, DNA methylation, Baghmaleki Theory