Scientists make DNA discovery that may help find pancreatic cancer cure. Researchers find spread of disease is aided by shutting down of molecules in key genes, a process known as DNA methylation. It has the worst survival rates of all the most common forms of the disease.

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#DNA #PancreaticCancer #Research #MedicalBreakthrough #ScienceDiscovery

US adults aged 33 to 44, having experienced loss was linked to having an older biological age and a faster pace of ageing as measured by changes to DNA known as epigenetic clocks | Researchers say this may be a key way that experiencing the death of a family member impacts our health later in life.

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#aging #health #epigenetics #DNA #lossimpacts

Largest genome sequenced so far is 30 times bigger than a human's. The South American lungfish has a whopping 180 gigabases of DNA in each cell

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#GenomeSequencing #DNA #Lungfish #Genetics #ScienceResearch

Mitochondria Are Flinging Their DNA into Our Brain Cells

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#mitochondria #DNA #braincells #science #research

25-year study reveals key factors in healthy brain aging and cognitive performance: DNA methylation patterns predicts mortality risk, and higher childhood intelligence correlates with healthy brain aging and better cognitive performance later in life

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#BrainHealth #CognitivePerformance #HealthyAging #DNA #ChildhoodIntelligence

DNA Reveals When Humans And Neanderthals Became One |A new genetic analysis of the earliest known modern human remains found in Germany and the Czech Republic suggests emigrant Homo sapiens and Homo neanderthalensis mingled between 45,000 and 49,000 years ago - more recently than previous estimates.

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#DNA #Neanderthals #HomoSapiens #AncientHumans #GeneticHistory

Second-Hand Smoke Exposure During Childhood Leaves its Mark on Children's DNA . Children exposed to second-hand smoke at home are more likely to show certain changes in the epigenome, which can alter the way genes are expressed.

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#SecondHandSmoke #ChildHealth #Epigenetics #DNA #SmokeFreeHomes

Association between maternal perceived stress during pregnancy 🤰 and offspring DNA methylation changes 🧬 in stress-related HPA axis genes at birth 👶 in the ECHO Consortium

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#MaternalHealth #PregnancyStress #DNA #HApathway #ECHOConsortium

In rats, early-life stress via maternal separation induces widespread DNA methylation changes in prefrontal cortex, enriching glutamatergic, MAPK, and calcium channel pathways 🐀💔🧬🧠✨

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#EarlyLifeStress #DNA #Methylation #Neuroscience #MaternalSeparation

Third-generation descendants of Holocaust survivors show DNA methylation differences in HPA-axis (NR3C1, FKBP5) and oxytocin-pathway genes, with greater openness to closeness 🤗 but no increase in mental health symptoms 🧠.

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#HolocaustSurvivors #DNA #MentalHealth #Epigenetics #PsychologyResearch

James Watson, co-discoverer of DNA's double helix, dead at 97 🧬😢

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#JamesWatson #DNA #DoubleHelix #ScientificLegacy #InnovationThroughScience

🔬 Scientists are using DNA analysis to verify if the remains at Leonardo da Vinci's interment site are truly his, comparing DNA from living relatives to bone fragments.

🌳 The project began with extensive genealogical research, tracing Leonardo's male lineage back to 1331, identifying descendants for DNA comparison.

🧬 DNA analysis on living relatives revealed matching segments of the Y chromosome with bone fragments found at a family tomb, confirming the continuity of da Vinci's male line.

#DNA #LeonardoDaVinci #Science

Newly discovered bacterial defense system challenges genetic code's central dogma: Stanford University team describes a bacterial enzyme that synthesizes DNA without a nucleic acid template, using its own structure as a guide

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#Science #DNA #Genetics

DNA matches identify four more sailors from the doomed Franklin expedition including one found 80 miles away from his ship. In 1846 after two years out at sea, the ships became trapped in the ice near King William Island, and the crew eventually were forced to set out on foot.

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#DNA #FranklinExpedition #ForensicGenetics

Global DNA study: where you live may change how fast you age. Ethnic background leaves a deep mark on your immune system, metabolism and gut bacteria no matter where you move: East Asians outside Asia were biologically older than those in Asia, Europeans showed the opposite pattern

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#Aging #DNA #Microbiome

🔬 Damaged DNA has been observed escaping from human cells and entering neighboring cells via tunneling nanotubes, a discovery reported May 19 in Cell.

🧬 This DNA transfer, previously unseen, could potentially allow harmful mutations and traits like antibiotic resistance to spread between cells, raising questions about its role in cancer.

🔬 Scientists triggered DNA damage in lab-grown cells and witnessed fragments traveling along cell-connecting threads, suggesting these damaged pieces can carry functional genetic information.

🔬 This discovery, described as "important and exciting," opens new avenues for research into how DNA transfer might contribute to cancer development and treatment resistance.

#CancerResearch #DNA #CellBiology

Study reveals why DNA damage from smoking and UV rays may cause cancer in some people but not others: « We’ve been able to show for the first time the extent to which genetic background influences both the mutation processes and the pathways leading to tumour development. »

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#DNA #CancerResearch #GeneticRisk

Research shows participants assigned to a vegan diet vs. a meat-rich diet showed changes in DNA methylation — a biological process that regulates whether genes are more or less active — that were linked to immune function, metabolism and cancer-related pathways.

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#DNA methylation #veganvsmeat #immuneMetabolismCancer

An artificial "synapse" reads DNA markers like a nerve cell reads signals. In blind trials it caught early prostate cancer with perfect accuracy in 105 patients.

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#DNA #ProstateCancer #BiotechDetection

🧠 Researchers discovered fragments of a human gene, BC200, found within the molluscum contagiosum virus that infects skin.

🔬 These BC200-derived sequences, originating from mobile DNA, have a history of self-copying and inserting into new locations, including this unusual jump across the human-virus boundary.

🌍 The study, published in Science, suggests this genetic movement has occurred throughout primate evolution and may contribute to differences in human genomes.

🧬 While BC200 is active in brain cells and helps regulate protein production, its exact function within the virus is still unknown, and the virus does not appear to have gained brain functions.

#Genetics #ScienceNews #DNA