Molecular biology explores the tiny machinery inside living cells, revealing how genetic instructions are read, copied, and turned into the proteins that keep us alive. This field acts as a bridge between the static code of DNA and the dynamic processes that drive growth, disease, and life itself, offering insights into everything from cellular repair to the development of new medicines.

On Gist.Science, we track every new preprint uploaded to bioRxiv in this category to make these complex discoveries accessible to everyone. Our team processes each submission to provide both clear, plain-language explanations and detailed technical summaries, ensuring you can grasp the core findings without getting lost in dense academic jargon.

Below are the latest molecular biology papers freshly processed from bioRxiv, ready for you to explore and understand.

A safer fluorescent in situ hybridization protocol for cryosections

This paper presents a safer, high-sensitivity fluorescent in situ hybridization (FISH) protocol for cryosections that replaces toxic reagents with low-toxicity alternatives while enabling multiplexed mRNA detection, preserving tissue integrity without proteolytic enzymes, and allowing simultaneous immunostaining.

Chihara, A., Mizuno, R., Kagawa, N., Takayama, A., Okumura, A., Suzuki, M., Shibata, Y., Mochii, M., Ohuchi, H., Sato, K., Suzuki, K.-i. T.2026-04-16📄 molecular biology

Targeted 3'-end RNA sequencing uncovers cryptic polyadenylation in Huntington's disease linked to somatic instability and CAG repeat purity

This study introduces a targeted 3'-end RNA sequencing method (3TRS) that reveals how long, pure, and somatically unstable CAG repeats in Huntington's disease drive the expression of the pathogenic HTT1a isoform through cryptic polyadenylation, offering a robust framework for investigating disease mechanisms and therapeutic strategies.

Velasco-Bilbao, A., Manterola, M., Herrero-Reiriz, A., Carazo-Hidalgo, M., Misiukiewicz, A., Arnold-Garcia, O., Perez-Navarro, E., Hallegger, M., Ule, J., Rabano, A., Lopez de Munain, A., Olejniczak (…)2026-04-16📄 molecular biology

HIV and Cocaine exposure promote Tau phosphorylation through RSK-1 in a GSK3β-independent manner.

This study identifies RSK1 as a central, GSK3β-independent mediator that drives Tau phosphorylation in response to both HIV and cocaine exposure, revealing a convergent signaling mechanism that contributes to neurocognitive dysfunction and suggesting RSK1 inhibition as a potential therapeutic strategy for Tau-associated pathologies.

Sharma, A. L., Sariyer, I. K., Naik, U. P., Tyagi, M.2026-04-16📄 molecular biology

Spatiotemporal and demographic effects on avian malaria prevalence in blue tits

Based on 15 years of breeding data from southern Sweden, this study reveals that avian malaria prevalence in blue tits is significantly shaped by host age, sex, and local habitat, with infection rates increasing over time and accumulating in older birds, thereby underscoring the critical value of long-term research for understanding host-parasite dynamics.

Theodosopoulos, A. N., Andreasson, F., Jönsson, J., Nilsson, J., Nord, A., Raberg, L., Stjernman, M., Torres Lara, A. S., Nilsson, J.-A., Hellgren, O.2026-04-16📄 molecular biology

The RNase and RNA binding activities of selected RNase R truncations and mutations plus a detailed step by step protocol to purify recombinant RNase R

This study characterizes the functional impacts of specific RNase R mutations on RNA binding and degradation while providing a detailed, cost-effective protocol for purifying high-quality recombinant RNase R in E. coli using standard FPLC systems to facilitate circRNA research and therapeutic development.

Horikawa, W., Kiss, D. L.2026-04-16📄 molecular biology

Frataxin depletion leads to decreased soma size and activation of AMPK metabolic pathway in dorsal root ganglia sensory neurons

This study demonstrates that frataxin depletion in dorsal root ganglia sensory neurons causes a reduction in soma size driven by mitochondrial dysfunction-induced AMPK hyperactivation and mTOR suppression, a phenotype that can be rescued by restoring frataxin, inhibiting AMPK, or treating with alpha-lipoic acid.

Griso, O., Chellapandi, D. M., Weiss, A., Manolaras, I., Puccio, H.2026-04-15📄 molecular biology

A systematic interactome of SET1C expands its functional landscape and identifies candidate regulatory connections

This study employs yeast two-hybrid screening to map a comprehensive interactome of the yeast SET1C complex, revealing novel connections to RNA biogenesis and nuclear transport while demonstrating that Set1 methylates the AT-hook domain of the chromatin remodeler Snf2, thereby uncovering a new interplay between lysine and arginine methylation.

Luciano, P., Park, K., Audebert, S., Camoin, L., Nino, C. A., Park, D. K., Maudlin, I. E., Dubarry, M., lee, l., Oeffinger, M., Beggs, J. D., Kim, Y. H., Kim, J., Dichtl, B., Geli, V.2026-04-15📄 molecular biology

Nature's antivenom: Combinations of conserved rattlesnake serum metalloproteinase inhibitors block the lethal action of viper venoms

This study demonstrates that specific combinations of evolutionarily conserved rattlesnake serum metalloproteinase inhibitors (FETUAs) can fully neutralize the lethal effects of diverse viper venoms with significantly greater potency than current commercial antivenoms, offering a promising new therapeutic strategy for snakebite treatment.

Carroll, S., Ukken, F. P., Ayinuola, Y. A., Escalana, L., Suntravat, M., Sanchez, E. E.2026-04-15📄 molecular biology

FXR and BET signaling orchestrate to protect β cells

This study reveals that the Farnesoid X receptor (FXR) and BET signaling pathways cooperatively protect pancreatic {beta} cells from inflammation-induced dysfunction and loss of identity in diabetes by forming a direct protein-protein interaction, suggesting that combined FXR activation and BET inhibition represents a promising therapeutic strategy to preserve {beta} cell function in both type 1 and type 2 diabetes.

Cayabyab, F., Tipirneni, J., Chen, D., Choi, J., Hamba, Y., Pham, N., Tacto, C., Wu, J., Wang, L., Mirzakhanyan, Y., Gershon, P. D., Perez, H., Harada, N., Kim, K., Shaheen, A., Fang, S., Ipp, E., Che (…)2026-04-14📄 molecular biology

TREX2 component PCID2 scaffolds alternative SAC3-based subcomplexes with distinct RNA processing and export function

This study reveals that the TREX2 complex functions as a modular system where the scaffold protein PCID2 assembles into distinct, evolutionarily conserved subcomplexes with GANP, LENG8, or SAC3D1 to direct specific RNA processing and export pathways to different cellular compartments.

Aksenova, V., Giordano, E., Esnault-Petrov, C., Arnaoutov, A., Dasso, M.2026-04-14📄 molecular biology