This study discovered a new molecular pathway that controls how cells fight off viruses. The protein SP140 partners with a complex called RESIST to protect antiviral messenger RNAs from being destroyed, keeping the immune defense active. This mechanism is essential for cells to mount an effective response against viral infections.

An ancient viral DNA fragment (Alu element) embedded in our genome creates a decoy version of a key immune receptor called IFNAR2. This truncated protein is secreted from cells and intercepts interferon signals, acting as a built-in brake on the immune system. The discovery reveals that "junk DNA" parasites have been repurposed to fine-tune human immunity.

Ancient viral DNA sequences called LTR10 elements, normally kept silent, become reactivated in colorectal cancer and function as rogue gene switches. These cancer-specific switches are driven by the MAPK signaling pathway and can be turned off with MEK inhibitor drugs, suggesting a new therapeutic strategy.

This study examined how a cancer-driving protein in a childhood muscle cancer depends on another protein called ETS1 to access DNA. Understanding this dependency could reveal new drug targets for rhabdomyosarcoma, a rare but aggressive pediatric cancer.

Blocking the enzymes EHMT1 and EHMT2, which chemically modify DNA-packaging proteins, caused therapy-resistant ovarian cancer tumors to shrink. This approach works by reactivating genes that suppress tumor growth, offering a potential strategy for cancers that no longer respond to standard treatments.

An ancient retrovirus embedded in the human genome acts as a hidden gene switch that turns on the immune gene SP140 specifically in tumors. This finding shows how viral relics can be co-opted to drive cancer-specific gene expression patterns.

Combining two drug classes — one targeting epigenetic enzymes (EHMT inhibitors) and one targeting DNA repair (PARP inhibitors) — proved more effective at killing therapy-resistant ovarian cancer cells than either drug alone. This dual approach could help overcome treatment resistance in advanced ovarian cancer.

A LINE-1 transposable element sitting inside the IFNAR1 gene — which encodes a critical interferon receptor — helps regulate how much of that receptor immune cells produce. This shows that "parasitic" DNA insertions can be domesticated to control the expression of neighboring immune genes.

This study profiled the very earliest gene expression changes when human and rhesus macaque immune cells are stimulated with interferon, providing a resource for understanding species differences in antiviral responses.

Short repetitive DNA elements called B2 SINEs, found only in rodent genomes, are activated as gene enhancers during the immune response to viruses. This parallel discovery in mice mirrors similar findings in primates and cattle, revealing that different mammals independently co-opted different transposable elements to boost their immune defenses.

The stress-response protein ATF6 helps ovarian cancer cells survive treatment with PARP inhibitor drugs by activating protective cellular pathways. Targeting ATF6 alongside PARP inhibitors could help overcome this common form of drug resistance.

DNA parasites unique to cattle and their relatives have been repurposed as immune gene switches that activate in response to viral infection. This shows that the co-option of transposable elements for immunity is a widespread evolutionary phenomenon, not limited to primates.

Transposable elements in bat genomes are activated during the interferon antiviral response, suggesting bats — known for their unusual tolerance of viruses — may use these elements to regulate immune signaling differently from other mammals.

By mapping the three-dimensional folding of chromosomes, this study identified transposable elements that physically contact and potentially regulate distant host genes, revealing a new layer of TE-mediated gene control.

Despite 160 million years of independent evolution, marsupials and placental mammals share remarkably similar gene expression programs during pregnancy and lactation, suggesting deep conservation of reproductive biology.

Endogenous retroviruses — ancient viral DNA embedded in our genome — were co-opted as immune gene switches that turn on in response to interferon signaling. Deleting these elements with CRISPR abolished the immune activation of nearby genes, proving they are essential regulatory components.

A long non-coding RNA can erase the "memory" of gene activation at a promoter, allowing cells to reset their transcriptional state. This reveals a mechanism by which non-coding transcripts influence gene regulation.

The placenta naturally accumulates large-scale gains and losses of DNA segments during development, making it one of the most genetically variable tissues in the body — a feature that may facilitate rapid placental evolution.

This study describes methods for dissecting transcriptional networks during early vertebrate embryogenesis, providing a framework for understanding how gene regulatory programs are established during development.

This study examines the relationship between genomic imprinting and placental evolution across mammals, exploring how parent-of-origin gene expression patterns shape reproductive biology.

Ancient retroviruses embedded in mammalian genomes function as species-specific gene switches in the placenta, helping drive the rapid evolutionary changes in this organ across different mammals.

Genes at the interface between mother and fetus in the rodent placenta evolve at unusually rapid rates, consistent with an evolutionary arms race driven by conflicting genetic interests between parent and offspring.

This study investigates the role of Wnt signaling in establishing the primary body axis during vertebrate embryogenesis, revealing how early patterning signals organize the developing embryo.

This study examines how chromatin structure and transcription factor binding interact during early vertebrate development, providing insights into the regulation of gene expression programs that drive embryogenesis.

This comparative analysis of testis-expressed proteins in rodents reveals rapid molecular evolution driven by sexual selection and reproductive competition, providing insights into the evolutionary forces shaping male reproductive biology.

This comprehensive review synthesizes evidence that transposable elements — once dismissed as genomic parasites — are a major source of gene regulatory innovation, contributing enhancers, promoters, and other control elements across animal genomes.

This review explores how endogenous retroviruses influence immune cell function through epigenetic mechanisms, acting as platforms for chromatin regulation that can both activate and silence nearby immune genes.

This commentary highlights new research showing that transposable elements provide binding sites for transcription factors critical in T cell development, expanding our understanding of how immune cell identity is shaped by parasitic DNA.

This perspective piece discusses how retroviruses that infected our ancestors millions of years ago now play essential roles in placental development and pregnancy, blurring the line between parasite and partner.

This review argues that endogenous retroviruses have been a driving force behind the rapid and diverse evolution of the mammalian placenta, providing ready-made regulatory elements for species-specific gene expression.

This commentary discusses how transposable elements contribute to X chromosome dosage compensation, highlighting yet another way genomic parasites have been repurposed for essential biological functions.