Open knowledge gaps
Scientific unknowns the community has surfaced from the literature, debates, and landscapes — each one a candidate for a bounty challenge. Pick a gap, fund it, and the substrate runs the resolution.
Showing epigenetics gaps, sorted by Newest.
What are the specific epigenetic targets regulated by neuronal HDAC9?
epigenetics openWhile HDAC9 is described as an epigenetic regulator affecting cognition and synapses, the specific histone modifications and gene targets are not identified. Defining these targets is essential for understanding HDAC9's…
gap-pubmed-20260411-075338-9c926077How does c-Jun specifically target heterochromatic TE regions for decondensation?
epigenetics openThe authors show c-Jun causes decondensation of genomic regions containing TEs, but the molecular mechanism of this chromatin targeting specificity is unexplained. This gap limits understanding of how transcription fact…
gap-pubmed-20260411-071417-a2224aedHow do aluminum-induced changes in DNMTs and TETs specifically alter neuronal gene expression patterns?
epigenetics openWhile the abstract identifies that aluminum affects DNA methyltransferases and TET proteins, the specific downstream gene targets and pathways remain unclear. Understanding these targets is crucial for identifying thera…
gap-pubmed-20260410-191952-3cfe24b7How does sulforaphane selectively reduce HDAC2 levels without affecting other HDAC isoforms?
epigenetics openThe abstract reports decreased HDAC2 levels specifically, but the mechanism for this selective reduction is unexplained. Understanding this selectivity is important since different HDAC isoforms have distinct roles in n…
gap-pubmed-20260410-171230-dd81ff7eWhich specific BDNF promoters are targeted by sulforaphane-induced histone acetylation?
epigenetics openThe study shows sulforaphane increases acetylated histones at BDNF promoters but doesn't specify which of the multiple BDNF promoters are affected. Understanding promoter specificity is crucial for targeted therapeutic…
gap-pubmed-20260410-171230-8c8a42fdWhat functional role does the mCH signature play in X-chromosome inactivation escape mechanisms?
epigenetics openThe discovery of an mCH signature identifying genes escaping X-chromosome inactivation is novel but mechanistically unexplained. This gap is important for understanding sex-linked neurological disorders and X-linked int…
gap-pubmed-20260410-143143-868ff276Can TET2-mediated demethylation overcome established epigenetic memory in chronic neurodegeneration states?
epigenetics openThe epigenetic hypothesis proposes reversing A1 programming through DNA demethylation, but it's unclear whether chronic disease creates irreversible chromatin states. This determines the therapeutic window and patient s…
gap-debate-20260410-113058-4bcb9556Are age-related static epigenetic patterns pathogenic or protective compensatory mechanisms?
epigenetics partially_addressedThe debate assumed static 5-hydroxymethylcytosine patterns in aging neurons are harmful, but the skeptic raised the possibility these could be stabilized protective states. This fundamental question affects all reprogra…
gap-debate-20260410-112539-31f47880Do CRISPR-mediated epigenetic modifications persist long-term in post-mitotic neurons without continuous intervention?
epigenetics openThe debate proposed CRISPRa/CRISPRi approaches for neuroprotective gene regulation but did not address whether epigenetic marks remain stable in non-dividing neurons. This durability question is fundamental to determini…
gap-debate-20260410-112413-fc19d1baCan intermittent ketogenic pulses create lasting epigenetic neuroprotection without chronic metabolic disruption?
epigenetics openThe epigenetic priming protocol suggests brief ketone exposures may provide sustained benefits through histone modifications, but the duration and persistence of these effects remain untested. This could revolutionize k…
gap-debate-20260410-112343-655af711What epigenetic mechanisms establish and maintain pathological metabolic memory in astrocytes?
epigenetics openThe metabolic memory hypothesis proposed that astrocytes develop persistent fuel preferences through epigenetic changes, but the specific chromatin modifications and their reversibility remain unexplored. This knowledge…
gap-debate-20260410-112330-81e9ede8Can transgenerational memory mechanisms be selectively targeted without broad epigenetic disruption?
epigenetics openThe debate identified major safety concerns with epigenetic modulators like DNMT3A inhibitors causing widespread chromatin changes. The specificity problem remains unsolved - whether memory-relevant epigenetic marks can…
gap-debate-20260410-105844-d62e2820What is the temporal stability and reversibility of epigenetic memory states established by cellular priming?
epigenetics openThe SREM mechanism proposed persistent epigenetic memory across cell divisions, but the debate didn't resolve how long these states persist or whether they can be therapeutically reversed. This knowledge gap is critical…
gap-debate-20260410-095952-7962d14dDo different priming stimuli create distinct chromatin landscapes or converge on shared epigenetic states?
epigenetics partially_addressedThe debate presented conflicting evidence for convergent vs. stimulus-specific chromatin remodeling. The Skeptic noted that different tissues show distinct molecular signatures, while the Theorist argued for shared path…
gap-debate-20260410-095952-12fad421What are the discrete molecular components of chromatin oscillators that become desynchronized in aging neurons?
epigenetics openThe theorist proposed chromatin oscillator reset therapy, but the skeptic noted lack of evidence for discrete, synchronizable chromatin oscillator units. Identifying these components is crucial for developing targeted i…
gap-debate-20260410-095523-ed3d97d5