Tag Archive for 'Gene'

This scanning electron microscope image shows SARS-CoV-2 (round magenta objects) emerging from the surface of cells cultured in the lab. The virus shown was isolated from a patient in the U.S. Image credit: NIAID-RML.

Study: Pangolins are Missing Link in Transmission of SARS-CoV-2 from Bats to Humans

Mar 27, 2020 by News Staff

Two recent studies concluded that snakes are the intermediate hosts of SARS-CoV-2, a novel coronavirus that causes the COVID-19 disease, and that four...

Transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient. Image credit: NIAID.

SARS-CoV-2 Coronavirus Has Natural Origin: Study

Mar 19, 2020 by News Staff

An analysis of the genomes of SARS-CoV-2, a novel coronavirus which causes COVID-19 disease, and related coronaviruses found no evidence that the virus...

Scanning electromicrograph of an HIV-infected T cell. Image credit: NIAID.

Second Patient Cured of HIV, Researchers Say

Mar 11, 2020 by News Staff

A study of the ‘London patient’ — the second HIV patient to undergo stem cell transplantation from donors with a HIV-resistant gene — finds...

Genome-wide transcriptomics analysis of anatomically dissected regions in mammalian brains uncovers regional and species-specific expression: multiple regions of the human, pig, and mouse brain were dissected and analyzed; a uniform manifold approximation and projection (UMAP) analysis (middle) shows the global expression patterns of 1,710 samples in the human brain, with the cerebellum as the outlier; the Human Protein Atlas (HPA) Brain Atlas (right) shows the expression of individual genes, for example, synaptosomal-associated protein 25 (SNAP25), in the different brain regions in the three mammalian species. Image credit: Sjöstedt et al, doi: 10.1126/science.aay5947.

Researchers Create Atlas of Protein-Coding Genes in Mammalian Brain

Mar 10, 2020 by News Staff

The Brain Atlas explores the protein expression in the mammalian brain by visualization and integration of data from three species of mammals: human, pig...

The Chinese red panda (Ailurus styani). Image credit: Yunfang Xiu, Straits (Fuzhou) Giant Panda Research and Exchange Center, China.

DNA Analysis Reveals There Are Two Distinct Species of Red Pandas

Mar 9, 2020 by Sergio Prostak

An analysis of DNA from wild populations of the red panda (Ailurus fulgens) has found that there is not just one species but enough genetic differences...

Biologists Discover Animal that Lacks Mitochondrial Genome, Doesn’t Need Oxygen to Live

Feb 26, 2020 by News Staff

An international team of biologists has discovered that a tiny parasite of salmon called Henneguya salminicola has no mitochondrial genome and thus has...

46,000-Year-Old Horned Lark Found in Siberian Permafrost

Feb 21, 2020 by News Staff

In a new study published today in the journal Communications Biology, an international team of researchers radiocarbon-dated an exceptionally well-preserved...

West Africans Carry DNA from Mysterious Archaic Hominin

Feb 14, 2020 by Enrico de Lazaro

Four West African populations — Yoruba, Esan, Mende, and Gambian — derive 2 to 19% of their genetic ancestry from a yet-undiscovered species...

TEM image of Bacillus subtilis grown in corbomycin shows a characteristic twisted phenotype; red triangles mark sites of aberrant-division septa formation, thickened cell wall and granular formations. Image credit: Culp et al, doi: 10.1038/s41586-020-1990-9.

Two Glycopeptide Antibiotics Have Never-Before-Seen Way to Kill Bacteria

Feb 13, 2020 by News Staff

Two members of a new class of glycopeptide antibiotics — the previously known glycopeptide antibiotic complestatin and a newly-discovered compound...

Depiction of huge bacteriophages (red, left) and normal phages infecting a bacterial cell. The huge phage injects its DNA into the host cell, where Cas proteins -- part of the CRISPR immune system typically found only in bacteria and archaea -- manipulate the host cell’s response to other viruses. The authors have not yet photographed any huge phages, so all are depicted resembling the most common type of phage, T4. Image credit: Jill Banfield Lab / University of California, Berkeley.

Giant Bacteriophages Bridge Gap between Living Microbes and Viral Machines

Feb 13, 2020 by News Staff

Bacteriophages — viruses that infect bacteria — are considered distinct from cellular life owing to their inability to carry out most biological...

Researchers Sequence Genomes of Two Basmati Rice Varieties

Feb 10, 2020 by News Staff

A research team led by New York University scientists has sequenced and analyzed the genomes of two members of the basmati rice group: a variety of basmati...

This is an artist’s rendition of a woolly mammoth (Mammuthus primigenius). Image credit: Flying Puffin / CC BY-SA 2.0.

Scientists ‘Resurrect’ Mutated Genes of Wrangel Island Mammoths

Feb 7, 2020 by News Staff

Woolly mammoths (Mammuthus primigenius) were among the most abundant cold adapted species during the Pleistocene. Their once large populations went extinct...

Ohio State University researchers cut an ice core retrieved from the Guliya ice cap in the Kunlun Mountains in Tibet in 2015. Image credit: Giuliano Bertagna, Byrd Polar and Climate Research Center, Ohio State University.

15,000-Year-Old Viruses and Bacteria Found in Glacier Ice from Tibet

Jan 31, 2020 by Natali Anderson

A team of U.S. researchers has found ancient viruses and bacteria in ice from two cores drilled on the summit and plateau of the Guliya ice cap in northwestern...

Neanderthal. Image credit: Neanderthal Museum.

Study: African Individuals Carry More Neanderthal DNA than Previously Thought

Jan 31, 2020 by News Staff

Using a novel method for detecting Neanderthal ancestry in modern humans, a team of U.S. researchers has demonstrated that remnants of Neanderthal genomes...

The northern paper wasp (Polistes fuscatus). Image credit: Judy Gallagher / CC BY 2.0.

Scientists Trace Evolution of Visual Individual Recognition in Paper Wasps

Jan 28, 2020 by News Staff

A team of researchers has sequenced and analyzed the genomes of Polistes fuscatus, a species of paper wasp that has uniquely evolved visual individual...

White fat cells (adipocytes) activate the lipolysis pathway to produce the free fatty acids that are used as heating fuel by brown adipose tissue. Nayak et al show that OPN3 is required for blue-light-enhanced activation of the lipolysis pathway. This explains the low body temperature of OPN3 mutant mice. Image credit: Nayak et al, doi: 10.1016/j.celrep.2019.12.043.

Fat Cells Can Sense Light, Animal Study Shows

Jan 28, 2020 by News Staff

Light exposure regulates how two kinds of fat cells (adipocytes) work together to produce the raw materials that all other cells use for energy, according...

The top image shows a knee joint in a healthy rat (white indicates cartilage); the second image from top shows a joint with grade 2 untreated osteoarthritis; the third image shows a joint with osteoarthritis that has worsened from grade 2 to grade 4 after six weeks of placebo therapy; the bottom image shows a joint with osteoarthritis that improved from grade 2 to grade 1 (mild) after six weeks of combination therapy with αKLOTHO and TGFβR2. Image credit: Salk Institute.

Powerful Combination of Two Experimental Drugs Counteracts Osteoarthritis in Rats

Jan 27, 2020 by News Staff

A research team headed by scientists at the Salk Institute for Biological Studies has discovered that a combination of two molecules, alpha-KLOTHO (αKLOTHO)...

Newly-Identified Coronavirus 2019-nCoV: Here’s What You Need to Know

Jan 27, 2020 by News Staff

The current outbreak of viral pneumonia in Wuhan, a rapidly flourishing capital city of the Hubei province and the traffic hub of central China, was caused...

A giant squid, at least 10-12 feet in length, approaches the Medusa’s e-jelly lure before realizing the e-jelly is not food and retreating. Image credit: Edie Widder & Nathan Robinson.

Researchers Sequence Genome of Elusive Giant Squid

Jan 16, 2020 by News Staff

An international team of scientists has sequenced the genome of the giant squid (Architeuthis dux), the species which has inspired generations to tell...

Winterdahl et al investigated the effects of sucrose using positron-emission tomography (PET) imaging with [11C]carfentanil (μ-opioid receptor agonist) and [11C]raclopride (dopamine D2/3 receptor antagonist) in seven female anesthetized Göttingen minipigs. Image credit: Winterdahl et al, doi: 10.1038/s41598-019-53430-9.

Sugar Changes Brain Chemistry, New Animal Study Shows

Jan 15, 2020 by News Staff

Foods high in sucrose, or table sugar, influence brain reward circuitry in ways similar to those observed when addictive drugs are consumed, according...

«‹18 192021 22 ›»