arXiv Machine Learning
5d ago

Locality-Controlled Out-of-Distribution Guidance for Robust Regulatory DNA Sequence Design

The paper introduces LOCOGEN, a method for designing regulatory DNA sequences that balances activity, novelty, and plausibility. LOCOGEN treats guidance as a locality problem, protecting motif positions with an invariant mask while applying out‑of‑distribution damping only to background regions. Experiments on HepG2, K562, and SK‑N‑SH datasets show that LOCOGEN reaches a previously underexplored region of the property‑novelty‑plausibility space, outperforming existing baselines.

By Dabin Jeong, Marwane Bourdim, Mo Lotfollahi
arXiv AI
Oct 21

Aptamers as a sandbox for lab-in-the-loop agentic molecular discovery

arXiv:2610.24806v1 Announce Type: cross Abstract: Despite breakthroughs in AI-driven molecular generation, existing discovery pipelines operate largely in silico, with wet-lab feedback reserved for v...

By Zachary Cutts, John Coller, Rachel Chen, Hua Tang, Mathias Bellaiche, Ryder Easterlin, Dina Zverinski, Petar Sirkovic, Avinatan Hassidim, Yossi Matias, Pooja Rao, Annalisa Pawlosky
arXiv AI
Oct 9

Unlocking the Regulatory Genome by ARGUS: An Evidence-Constrained Agentic Framework for Interpreting Single Nucleotide Variants

ARGUS is an evidence‑constrained framework that separates deterministic biological computation from large‑language‑model reasoning to interpret single nucleotide variants in noncoding regulatory regions. It uses 458 DNABERT‑based transcription factor binding models within a hypothesis‑directed loop where a planner selects evidence sources, a verifier interprets observations, and the investigation path adapts to uncertainty. In a case study of variant rs6983267, ARGUS generated divergent investigative trajectories for four transcription factors, demonstrating how real experimental data from ADASTRA, JASPAR, and ENCODE cCRE guide conclusions and how the LLM planner can reduce unnecessary tool calls.

By Pratik Dutta, Matthew B. Obusan, Max Chao, Rekha Sathian, Nimisha Papineni, Ramana V. Davuluri
arXiv Machine Learning
Sep 1

EvoLen: Evolution-Guided Tokenization for DNA Language Model

EvoLen is a tokenization method for DNA language models that incorporates evolutionary information to prioritize functional sequence patterns such as regulatory motifs. It groups DNA sequences by cross-species evolutionary signals, trains separate BPE tokenizers for each group, merges vocabularies with a rule that favors preserved patterns, and uses length-aware decoding with dynamic programming. Experiments show EvoLen better preserves functional motifs, differentiates genomic contexts, and aligns with evolutionary constraints while matching or surpassing standard BPE on various DNALM benchmarks.

By Nan Huang, Xiaoxiao Zhou, Junxia Cui, Mario Tapia-Pacheco, Tiffany Amariuta, Yang Li, Jingbo Shang