The platypus genome provides insights into the evolution of venom components and a bird-like sex-determination system in mammalian ancestors. Researchers have found that platypus venom genes evolved by gene duplication of antimicrobial beta-defensins, mirroring an independent evolutionary pathway in reptiles.
The journal showcases two classic methods for chromosomal analysis, including a protocol for mapping protein distributions on polytene chromosomes and a karyotyping technique for mouse cells. These approaches allow researchers to study gene regulation and chromatin structure at high resolution.
Researchers identified adult stem cells in the pituitary gland of mice that can adapt to traumatic stress or normal life changes. These cells are distinct from embryonic stem cells and have a more limited repertoire, but still play a crucial role in maintaining the organ's function.
Researchers at Cold Spring Harbor Laboratory have discovered a biochemical pathway where adenoviral protein E1A binds to p400, stabilizing Myc, a key oncoprotein. This interaction can lead to the promotion of cancer cell growth and tumorigenesis.
A team of scientists at Cold Spring Harbor Laboratory solved a puzzle about how genes are expressed by studying the way DNA is packed in yeast. They found that RNA interference plays a crucial role in transmitting epigenetic information across generations, providing specificity to histone modifications.
Researchers uncover how ATM mutations cause neurodegeneration in Ataxia telangiectasia by preventing neurons from re-entering the cell cycle. This finding holds promise for developing new treatments for A-T and other neurodegenerative disorders.
The study reveals that c-Cbl suppresses HSC self-renewal, leading to an increase in the number of HSCs in transgenic mice. This finding may facilitate expansion and manipulation of hematopoietic stem cells for tissue engineering and stem cell-based therapies.
Researchers developed a comparative genomics strategy to rapidly describe outbreak strains using next-generation DNA sequencing technology. This approach enables the identification of unique genetic properties of a potential outbreak strain in a matter of weeks, potentially saving time during emergency responses.
Researchers discovered a preference for certain DNA letters across intron regions and the opposite preference in coding regions, affecting at least a third of the genome. This finding supports previous studies suggesting that non-coding DNA is biologically important.
Researchers have induced cells to replenish the protein deficient in spinal muscular atrophy (SMA) by activating an existing, slightly modified copy of the mutant gene. Alternative splicing compensates for the missing gene, holding out hope for one day successfully treating this often-fatal disease.
Researchers have refined the Y chromosome haplogroup tree using genetic variations, resolving branches and estimating time to ancestral common ancestors. The updated tree provides new interpretations on geographical origins of ancient sub-clades and sheds light on the ancestry of major haplogroups such as E, O, S, and T.
The journal highlights a method for ENU mutagenesis to screen the mouse genome, allowing researchers to identify genes important in specific tissues or processes. A second featured protocol provides a step-by-step process for selecting the proper method for analyzing evolutionary relationships between genes.
Researchers found that microRNA miR-200 is a consistent marker of cancer cells expressing E-cadherin but lacking Vimentin. Altering miR-200 levels induced changes consistent with either inducing EMT or the reverse process.
A new method identified rare gene mutations in people with schizophrenia, which disrupt genes in pathways of neuronal development and regulation. The study suggests a previously unknown role for rare mutations in the causation of schizophrenia.
Scientists at Cold Spring Harbor Laboratory discovered that protein Pum helps build memories by selectively altering individual synapses in fruit flies. The study, published in PLOS Computational Biology, used computational analysis to predict the interactions of Pum with other genes and confirmed its role in memory formation.
Researchers have developed new mathematical models to infer ancestral origins from genomic data, significantly improving accuracy. Additionally, a novel technique for mapping disease genes using admixture linkage disequilibrium has been created, offering a powerful approach for identifying genetic determinants of common diseases.
Researchers identify KIFBbeta as a potential new neuronal tumor suppressor gene that mediates apoptosis in neural crest-derived tumors. The study suggests that KIFBbeta provides a protective effect against the development of these tumors.
Research reveals that microRNA depletion is necessary for tissue regeneration and that manipulating certain microRNA levels can enhance regenerative success in zebrafish. By tweaking the FGF signaling pathway, scientists were able to increase or decrease specific microRNA levels, resulting in improved or inhibited fin regeneration.
Researchers have identified 25 genes that regulate aging in both yeast and nematodes, with significant overlap between nutrient-response pathways. These findings suggest that similar mechanisms may contribute to human aging, providing a foundation for understanding age-associated diseases.
The MMB/dREAM complex, composed of Myb and E2F2-RB proteins, epigenetically regulates expression of the Polo kinase in Drosophila. Disruptions to this pathway are associated with human cancers and may lead to similar epigenetic changes.
A team at CSHL led by Professor Leemor Joshua-Tor discovered a new wrinkle in the regulation of gene expression that governs metabolic state in yeast cells. The discovery revealed a key role for the NADP molecule in adapting to changes in nutritional environments.
Researchers at Cold Spring Harbor Laboratory found that BMP signaling in dermal papilla cells is essential for hair growth. Deletion of the receptor for bone morphogenetic protein 1a (BMPR1a) in DP cells prevented hair follicle formation, while intact BMPR1a and additional BMP protein promoted hair growth.
Researchers found that STAT3 has tumor-promoting and tumor-suppressing effects depending on the genetic profile of glioblastoma tumors. This discovery highlights the need for effective therapies tailored to individual glioblastoma tumors.
Researchers discovered a specific clone of bacteria responsible for most cases of Legionnaires' disease, highlighting the genetic background of Legionella pneumophila. The study found that this clone has a high prevalence in human disease due to its ability to evade host immune responses.
Cold Spring Harbor Protocols highlights two RNA-based methods for understanding developmental processes in plants and flies. The first method uses RNAi to investigate gene function in fruit flies, while the second protocol describes how to detect where and when a gene is expressed in young plant tissues.
The iPlant Collaborative, a $50 million NSF grant, unites researchers from various plant biology fields to address 'grand challenge questions' with an all-encompassing computer- and internet-based infrastructure. The initiative also includes outreach materials for students and public education.
Researchers at CSHL used a new technique to measure neural responses in awake rats, finding that only 5% of neurons react strongly to specific sounds. This discovery may help explain how we focus on one sound amidst noise and could inform ways to improve sound learning.
Scientists used a transgenic system to monitor developmental regulated alternative mRNA splicing in live C. elegans worms, revealing conserved molecular mechanisms across metazoan evolution. The study enables experimental analysis of regulation mechanisms underlying alternative splicing patterns.
Scientists at Cold Spring Harbor Laboratory identify a new neural stem cell type, the rosette neuron stem cell (R-NSC), capable of differentiating into region-specific neuronal cell types. The R-NSC has expanded differentiation potential compared to previously identified neural stem cells.
Researchers successfully switched a gene regulatory element from a bat to a mouse, resulting in abnormally long forelimbs. This study demonstrates that evolution can be driven by changes in gene expression patterns, rather than solely genetic changes.
A $100,000 grant from Joan's Legacy will enable Cold Spring Harbor Laboratory to build upon recent lung cancer discoveries, focusing on epidermal growth factor receptors (EGFR) and their potential link to estrogen. The research aims to understand how EGFR genetic mutations contribute to non-small cell lung cancer development.
The Joni Gladowsky Breast Cancer Foundation has funded CSHL's innovative breast cancer research, led by Dr. Senthil Muthuswamy, to develop alternative treatment strategies for early-stage breast cancer. The foundation aims to identify genetic differences between benign and malignant lesions to prevent cancer progression.
Researchers at Cold Spring Harbor Laboratory have discovered endothelial progenitor cells that regulate tumor growth and transform dormant lung metastases into life-threatening lesions. Targeting these cells may provide a novel approach to treating lung cancer.
Cold Spring Harbor Protocols features methods to observe protein dynamics, including inserting lac operator sequences into mammalian cells and performing immunohistochemistry in whole mouse embryos. These techniques allow researchers to examine chromatin structure and protein activity during replication and transcription.
Research reveals antisense transcription of the Hox miRNA locus generates a novel miRNA precursor, mir-iab-8, which represses Hox gene targets, resulting in homeotic phenotypes. Additional antisense miRNAs identified in Drosophila and mammals may contribute to diversification of miRNA function.
Researchers discovered that uridine residues are added to the 3' end of histone mRNAs, decapping and degrading them via the general mRNA decay machinery. This work represents a new mechanism regulating the half-life of specific mammalian mRNA transcripts.
A recent study has uncovered a link between genetic variation and extreme body mass, suggesting that synonymous SNPs may affect mRNA splicing. The findings imply that subtle changes in genes involved in metabolism could lead to visible phenotypes later in life.
Researchers at CSHL have identified and repressed breast cancer stem cells in mouse tissue by manipulating microRNAs, suggesting a potential therapeutic target for breast cancer treatment. The study found that the delivery of the microRNA let-7 to breast-tissue cells can help distinguish stem-like tumor-initiating cells from other cells.
Researchers found that a special type of stem cell in the brain is selectively killed by space radiation, raising concerns about cognitive and emotional risks. The study's findings suggest that shielding or medications may be necessary to protect astronauts from health risks caused by space radiation.
Dr. Lars Zender receives grant to continue identifying new tumor suppressor genes in liver cancer using advanced sequencing technologies. His groundbreaking research at CSHL has the potential to shift the paradigm in cancer treatment.
Two new protocols are introduced to examine critical stages of early embryogenesis using fluorescently tagged cells. These methods enable the visualization of subtle movements of individual cells during embryo development. Researchers can use these techniques to investigate mechanisms of brain and heart development in birds.
Researchers block single gene NF-êB to reverse aging in mouse skin, demonstrating that aging is a result of an active genetic program. The study sets the stage for future genetic age-intervention therapies.
Research on human RecQ helicases reveals their role in regulating homologous recombination, a DNA repair pathway. Mutations in these enzymes cause cancer-predisposition syndromes, highlighting their importance in maintaining genomic stability.
Researchers at Cold Spring Harbor Laboratory have identified a new class of long short interfering RNAs (lsiRNAs) in Arabidopsis that are induced by bacterial infection or specific growth conditions. These lsiRNAs have unique biogenesis and target degradation pathways, suggesting they may play important roles in host immunity.
Scientists have developed a non-invasive method to track neural stem and progenitor cells in the live human brain using MRI technology. This breakthrough could lead to better diagnosis and monitoring of brain tumors and serious neurological disorders.
The study of 12 Drosophila genomes provides novel insights into microRNA (miRNA) regulation, identifying 59 new miRNAs and revealing greater diversity in their role in gene expression. The analysis also reveals emergent gene function and post-transcriptional regulation mechanisms, with potential applications in human disease research.
Cold Spring Harbor Laboratory scientists have developed a novel, low-cost method for sifting the human genome's high-value regions. The technique, called selective resequencing, enables researchers to target specific areas of interest and extract valuable genomic data from relatively small DNA samples.
The new protocol allows scientists to identify cell-cycle stages and analyze cell growth in mixed populations. It has been used to characterize immune cells in human blood, providing insight into their activity patterns.
Researchers identify novel TRF2 target promoters, distinguishing between three classes of genes dependent on TBP or TRF2. Depletion of TRF2 leads to reduced ribosomal gene transcription and chromosomal defects.
The domestic cat genome has been successfully sequenced, revealing approximately 65% of its euchromatic regions. The analysis identified 20,285 putative genes and hundreds of chromosomal rearrangements among mammals, shedding light on feline health and human disease.