Toplam 258 içerik listeleniyor
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How the ant queen gets her crown: Uncovering the evolution of queen-worker differences
Queen and worker ants develop from the same sets of genes, but end up being structurally, behaviourally, and functionally different. Queen and worker ants develop from the same sets of genes, but perform completely different ecological roles. How the same genes result in two types of individuals is an ongoing mystery. In the past, scientists have only studied a small number of ant species at a time to try to understand the nature of queen-worker differences. However, a team from the Okinawa...
https://www.biyologlar.com/how-the-ant-queen-gets-her-crown-uncovering-the-evolution-of-queen-worker-differences-haber-8124 -
First computer program developed to detect DNA mutations in single cancer cells
Researchers at The University of Texas MD Anderson Cancer Center have announced a new method for detecting DNA mutations in a single cancer cell versus current technology that analyzes millions of cells which they believe could have important applications for cancer diagnosis and treatment. The results are published in the April 18 online issue of Nature Methods.
https://www.biyologlar.com/first-computer-program-developed-to-detect-dna-mutations-in-single-cancer-cells-haber-8711 -
Building a CRISPR rainbow
CRISPRainbow, a new technology using CRISPR/Cas9 developed by scientists at UMass Medical School, allows researchers to tag and track up to seven different genomic locations in live cells. This labeling system, details of which were published in Nature Biotechnology, will be an invaluable tool for studying the structure of the genome in real time.
https://www.biyologlar.com/building-a-crispr-rainbow-haber-8722 -
UW team stores digital images in DNA -- and retrieves them perfectly
Technology companies routinely build sprawling data centers to store all the baby pictures, financial transactions, funny cat videos and email messages its users hoard. But a new technique developed by University of Washington and Microsoft researchers could shrink the space needed to store digital data that today would fill a Walmart supercenter down to the size of a sugar cube. The team of computer scientists and electrical engineers has detailed one of the first complete systems to encode,...
https://www.biyologlar.com/uw-team-stores-digital-images-in-dna-and-retrieves-them-perfectly-haber-8723 -
Tedavide ‘’Kök Hücre’’
Vücudumuzda yaşlanan ve ölen hücrelerin yerlerine yenileri oluşturulmaktadır. Bununla birlikte, yabancı antijenlerle savaşmak için vücut özel savunma hücreleri de üretmektedir. Gözümüzdeki hücreler görme, pankreastaki hücreler salgı, akciğerdeki hücreler solunum için farklılaşmaktadır.
https://www.biyologlar.com/tedavide-kok-hucre -
Tedavide ‘’Kök Hücre’’
Vücudumuzda yaşlanan ve ölen hücrelerin yerlerine yenileri oluşturulmaktadır. Bununla birlikte, yabancı antijenlerle savaşmak için vücut özel savunma hücreleri de üretmektedir. Gözümüzdeki hücreler görme, pankreastaki hücreler salgı, akciğerdeki hücreler solunum için farklılaşmaktadır.
https://www.biyologlar.com/tedavide-kok-hucre -
Biyoinformatik
"Biyoinformatik, biyolojik bilgilerin yaratılması ve saklanması için veritabanlarının oluşturulmasıdır. Bu konudaki çalışmaların çoğu biyolojik verilerin analizi ile ilgilidir. Artan sayıdaki projelerde biyolojik bilgilerin organizasyonu gerekmektedir. Bu alanda oluşturulan veritabanlarının büyük bir kısmını nükleik asitler oluşturmaktadır. Milyonlarca nükleotidin depolanması ve organizasyonu için veritabanlarının oluşturulması, araştırıcıların bu...
https://www.biyologlar.com/biyoinformatik-1 -
KÖK HÜCRELERE BAKIŞ:TANIMLAR, KAVRAMLAR ve SINIFLANDIRMALAR
İki binli yıllarla beraber kök hücrelerin rejeneratif tıp (yenileyici tıp) alanındaki öneminin giderek arttığını ve tıbbın geleceğini şekillendirme potansiyelini gözlemlemekteyiz.
https://www.biyologlar.com/kok-hucrelere-bakistanimlar-kavramlar-ve-siniflandirmalar -
Improving the delivery of chemotherapy with graphene
A new study published in IOP Publishing's journal 2D Materials has proposed using graphene as an alternative coating for catheters to improve the delivery of chemotherapy drugs. The research suggests that placing graphene - an extremely thin sheet of carbon atoms - on the internal surfaces of intravenous catheters commonly used to deliver chemotherapy drugs into a patient's body will improve the efficacy of treatments, and reduce the potential of the catheters breaking. The study indicates...
https://www.biyologlar.com/improving-the-delivery-of-chemotherapy-with-graphene -
Akneye sebep olan bakteriler konak canlı ile beslenerek hayatta kalıyor
Bilim adamları akneye sebep olan bakterilerin nasıl hayatta kaldığını keşfetti. Görsel Telif: Shutterstock
https://www.biyologlar.com/akneye-sebep-olan-bakteriler-konak-canli-ile-beslenerek-hayatta-kaliyor -
Akneye sebep olan bakteriler konak canlı ile beslenerek hayatta kalıyor
Bilim adamları akneye sebep olan bakterilerin nasıl hayatta kaldığını keşfetti. Görsel Telif: Shutterstock
https://www.biyologlar.com/akneye-sebep-olan-bakteriler-konak-canli-ile-beslenerek-hayatta-kaliyor -
BİYOTEKNOLOJİK ÜRÜNLER, ORGANİK ÜRÜNLER VE ULUSLARARASI TİCARETTEKİ GELİŞMELER
Modern biyoteknoloji ifadesi, genel olarak, modern bilgi ve tekniklerin uygulanması ile yapılan, genetik mühendisliğine dayalı tekniklerle gerçekleştirilen biyoteknolojiyi tanımlamakta kullanılmaktadır. Günümüzde özellikle tarım ve eczacılık sanayi alanlarında, modern biyoteknoloji yöntemleri kullanılarak çeşitli özelliklere sahip yeni canlı türleri elde etmek mümkün hale gelmiş, bu şekilde üretilen tarım ürünleri ve bunları içeren işlenmiş ürünler ile...
https://www.biyologlar.com/biyoteknolojik-urunler-organik-urunler-ve-uluslararasi-ticaretteki-gelismeler -
Sibernetik Organizmalaştırdığımız Böcekler
Diğer bir adıyla sayborg böcekler, yani Robocop gibi böcekler. Vücutlarına eklenen teknolojik araçlarla normalinden daha gelişmiş yeteneklere sahip olan canlıların prototiplerini oluşturmak için kullanılan böcekleri inceleyeceğiz.
https://www.biyologlar.com/sibernetik-organizmalastirdigimiz-bocekler -
New resource makes gene-editing technology even more user friendly
Researchers at Harvard University and the University of California, San Diego, have developed a new user-friendly resource to accompany the powerful gene editing tool called CRISPR/Cas9, which has been widely adopted to make precise, targeted changes in DNA. This breakthrough has the potential to facilitate new discoveries in gene therapies and basic genetics research. The research was published in the July 13 issue of Nature Methods. The study describes an approach to simplify a laborious...
https://www.biyologlar.com/new-resource-makes-gene-editing-technology-even-more-user-friendly -
Kanser Tedavisine Bakteriler ve Nano Robotlar
Kana enjekte edilen ilaçların hastalıklı hücrelere adrese teslim ve nokta atışı ulaştığı zamanların eşiğindeyiz. Bizleri gereksiz bıçakaltı işlemlerden ve ilaçların yan etkilerinden koruyacak, bakteri ve nano robotların insanların iyiliği için işbirliği yaptıkları tıbbi yöntemleri inceleyeceğiz.Askerleri küçültüp mikro boyutlara getirebilecek teknolojinin sırrına sahip bilim adamı Jan Benes, CIA ajanlarının yardımıyla SSCB’den kaçar. Ancak bu esnada...
https://www.biyologlar.com/kanser-tedavisine-bakteriler-ve-nano-robotlar -
Simple technology makes CRISPR gene editing cheaper
University of California, Berkeley, researchers have discovered a much cheaper and easier way to target a hot new gene editing tool, CRISPR-Cas9, to cut or label DNA. The CRISPR-Cas9 technique, invented three years ago at UC Berkeley, has taken genomics by storm, with its ability to latch on to a very specific sequence of DNA and cut it, inactivating genes with ease. This has great promise for targeted gene therapy to cure genetic diseases, and for discovering the causes of disease. The...
https://www.biyologlar.com/simple-technology-makes-crispr-gene-editing-cheaper -
Small molecule acts as on-off switch for nature's antibiotic factory
Scientists have identified the developmental on-off switch for Streptomyces, a group of soil microbes that produce more than two-thirds of the world's naturally derived antibiotic medicines. Their hope now would be to see whether it is possible to manipulate this switch to make nature's antibiotic factory more efficient. The study, appearing August 28 in Cell, found that a unique interaction between a small molecule called cyclic-di-GMP and a larger protein called BldD ultimately controls...
https://www.biyologlar.com/small-molecule-acts-as-on-off-switch-for-natures-antibiotic-factory -
Using DNA origami to build nanodevices of the future
Scientists have been studying ways to use synthetic DNA as a building block for smaller and faster devices. DNA has the advantage of being inherently "coded". Each DNA strand is formed of one of four "codes" that can link to only one complementary code each, thus binding two DNA strands together. Scientists are using this inherent coding to manipulate and "fold" DNA to form "origami nanostructures": extremely small two- and three-dimensional shapes that can then be used as construction material...
https://www.biyologlar.com/using-dna-origami-to-build-nanodevices-of-the-future -
Using DNA origami to build nanodevices of the future
Scientists have been studying ways to use synthetic DNA as a building block for smaller and faster devices. DNA has the advantage of being inherently "coded". Each DNA strand is formed of one of four "codes" that can link to only one complementary code each, thus binding two DNA strands together. Scientists are using this inherent coding to manipulate and "fold" DNA to form "origami nanostructures": extremely small two- and three-dimensional shapes that can then be used as construction material...
https://www.biyologlar.com/using-dna-origami-to-build-nanodevices-of-the-future -
ARITMA TESİSLERİ VE PROTOZOA
Çalışma metodları birbirinden farklı olsa da arıtma tesislerinin tamamı çeşitli protozoon gruplarını barındırır (Çizelge 1). Biyolojik unsurlar organik madde üzerinden beslenerek organik maddenin topaklaşmasını ve çökmesini sağlarlar. Bakteri bu maddelerin sıvı fazdan uzaklaştırılmasında rol alan en etkin organizma grubunu oluştur. Protozoonlar, atık su arıtma sistemlerinde biyolojik parçalanmadan sorumlu bakteriler üzerinden beslendiklerinden dolayı, önceleri...
https://www.biyologlar.com/aritma-tesisleri-ve-protozoa -
Chip-based technology enables reliable direct detection of Ebola virus
A team led by researchers at UC Santa Cruz has developed chip-based technology for reliable detection of Ebola virus and other viral pathogens. The system uses direct optical detection of viral molecules and can be integrated into a simple, portable instrument for use in field situations where rapid, accurate detection of Ebola infections is needed to control outbreaks. Laboratory tests using preparations of Ebola virus and other hemorrhagic fever viruses showed that the system has the...
https://www.biyologlar.com/chip-based-technology-enables-reliable-direct-detection-of-ebola-virus -
New method to grow zebrafish embryonic stem cells can regenerate whole fish
Zebrafish, a model organism that plays an important role in biological research and the discovery and development of new drugs and cell-based therapies, can form embryonic stem cells (ESCs).
https://www.biyologlar.com/new-method-to-grow-zebrafish-embryonic-stem-cells-can-regenerate-whole-fish -
15. Avrupa Biyoteknoloji Kongresi - 15th European Congress on Biotechnology
Biyoteknoloji Dünyası İstanbul’da Bir Araya Geliyo Biyoteknoloji Derneği’nin ev sahipliğinde Zed Etkinlik Yönetimi ve Danışmanlığı tarafından gerçekleştirilecek olan kongre 23-26 Eylül tarihlerinde İstanbul Grand Cevahir Otel’ de biyoteknoloji dünyasını bir araya getiriyo “Bio-crossroads” teması ile 15.kez düzenlenecek olan kongre son olarak, 2009 yılında İspanya’nın Barcelona şehrinde gerçekleştirildi. 108 Kurumsal, 12 binin üzerinde kişisel üyesi...
https://www.biyologlar.com/15-avrupa-biyoteknoloji-kongresi-15th-european-congress-on-biotechnology -
Scientists develop mesh that captures oil -- but lets water through
The unassuming piece of stainless steel mesh in a lab at The Ohio State University doesn't look like a very big deal, but it could make a big difference for future environmental cleanups. Water passes through the mesh but oil doesn't, thanks to a nearly invisible oil-repelling coating on its surface. In tests, researchers mixed water with oil and poured the mixture onto the mesh. The water filtered through the mesh to land in a beaker below. The oil collected on top of the mesh, and rolled...
https://www.biyologlar.com/scientists-develop-mesh-that-captures-oil-but-lets-water-through -
Role of telomeres in plant stem cells discovered
The role played by telomeres in mammalian cells has been known for several years. It is also known that these non-coding DNA sequences, which are found at the ends of the chromosomes, protect them and are necessary to ensure correct cell division.
https://www.biyologlar.com/role-of-telomeres-in-plant-stem-cells-discovered -
Functional human liver cells grown in the lab
In new research appearing in the prestigious journal Nature Biotechnology, an international research team led by The Hebrew University of Jerusalem describes a new technique for growing human hepatocytes in the laboratory. This groundbreaking development could help advance a variety of liver-related research and applications, from studying drug toxicity to creating bio-artificial liver support for patients awaiting transplantations. The liver is the largest internal organ in the human body,...
https://www.biyologlar.com/functional-human-liver-cells-grown-in-the-lab -
Broad, MIT scientists overcome key CRISPR-Cas9 genome editing hurdle
Researchers at the Broad Institute of MIT and Harvard and the McGovern Institute for Brain Research at MIT have engineered changes to the revolutionary CRISPR-Cas9 genome editing system that significantly cut down on "off-target" editing errors. The refined technique addresses one of the major technical issues in the use of genome editing. The CRISPR-Cas9 system works by making a precisely targeted modification in a cell's DNA. The protein Cas9 alters the DNA at a location that is specified by...
https://www.biyologlar.com/broad-mit-scientists-overcome-key-crispr-cas9-genome-editing-hurdle -
NanoTech Security Corp
Introductory video on NanoTech Security Corp.'s NOtES technology. NOtES stands for Nano-Optic Technology for Enhanced Security. This corporate video introduces where our inspiration for this incredible technology came from, how it's designed, and what products it can be used on. Enjoy!
https://www.biyologlar.com/nanotech-security-corp -
Nano-walkers take speedy leap forward with first rolling DNA-based motor
Physical chemists have devised a rolling DNA-based motor that's 1,000 times faster than any other synthetic DNA motor, giving it potential for real-world applications, such as disease diagnostics. Nature Nanotechnology is publishing the finding. "Unlike other synthetic DNA-based motors, which use legs to 'walk' like tiny robots, ours is the first rolling DNA motor, making it far faster and more robust," says Khalid Salaita, the Emory University chemist who led the research. "It's like the...
https://www.biyologlar.com/nano-walkers-take-speedy-leap-forward-with-first-rolling-dna-based-motor -
Are embryonic stem cells and artificial stem cells equivalent?
Harvard Stem Cell Institute (HSCI) researchers at Massachusetts General Hospital and Harvard Medical School have found new evidence suggesting some human induced pluripotent stem cells are the 'functional equivalent' of human embryonic stem cells, a finding that may begin to settle a long running argument. The findings were published this week in Nature Biotechnology. From 1998 until 2007 embryonic stem cells (ES cells) were the only human cells known with the potential to become any other...
https://www.biyologlar.com/are-embryonic-stem-cells-and-artificial-stem-cells-equivalent -
How an RNA gene silences a whole chromosome
Researchers at Caltech have discovered how an abundant class of RNA genes, called long non-coding RNAs (lncRNAs, pronounced link RNAs) can regulate key genes. By studying an important lncRNA, called Xist, the scientists identified how this RNA gathers a group of proteins and ultimately prevents women from having an extra functional X-chromosome--a condition in female embryos that leads to death in early development. These findings mark the first time that researchers have uncovered the detailed...
https://www.biyologlar.com/how-an-rna-gene-silences-a-whole-chromosome -
Researchers enhance CRISPR gene editing technology
Scientists have developed a process that improves the efficiency of CRISPR, an up-and-coming technology used to edit DNA. "Scientists all over the world are using CRISPR right now in their studies, but the technology is not as functional as it could be," says Haoquan Wu, Ph.D., who enhanced the process and is a biomedical scientist at Texas Tech University Health Sciences Center El Paso (TTUHSC El Paso). CRISPR is a groundbreaking technology that allows scientists to modify genes. Two key...
https://www.biyologlar.com/researchers-enhance-crispr-gene-editing-technology -
Hacking the programs of cancer stem cells
All tumor cells are the offspring of a single, aberrant cell, but they are not all alike. Only a few retain the capacity of the original cell to create an entire tumor.
https://www.biyologlar.com/hacking-the-programs-of-cancer-stem-cells -
Oncogene controls stem cells in early embryonic development
After a gestation period of around ten months, fawns are born in early summer - when the weather is warm and food is plentiful for the mother. Six months would actually be enough for the embryo's development, but then offspring from mating in the later portion of summer would be born in winter. Therefore, nature prolongs the gestation period by a hormone-regulated pause in the development of the early embryos. Many animal species use this process, called diapause, to adjust their reproduction...
https://www.biyologlar.com/oncogene-controls-stem-cells-in-early-embryonic-development -
4. ULUSLARARASI AVRASYA ORNİTOLOJİ KONGRESİ
Dear Friends and Colleagues, Please do remember that the abstract submission deadline for the 4th International Eurasian Ornithology Congress is 1 February, and registration deadline is 1 March. In case you have not paid your registration fee or sent your abstract yet, you can do this on-line from the Congress website (see below). Let me draw your attention also to the optional pre-congress field program which organized for participants from outside Hungary (details at the website) to which...
https://www.biyologlar.com/4-uluslararasi-avrasya-ornitoloji-kongresi -
Griffith uses 3-D tissue engineering to revolutionize dental disease
The discomfort and stigma of loose or missing teeth could be a thing of the past as Griffith University researchers pioneer the use of 3D bioprinting to replace missing teeth and bone. The three-year study, which has been granted a National Health and Medical Research Council Grant of $650,000, is being undertaken by periodontist Professor Saso Ivanovski from Griffith's Menzies Health Institute Queensland. As part of an Australian first, Professor Ivanovski and his team are using the latest...
https://www.biyologlar.com/griffith-uses-3-d-tissue-engineering-to-revolutionize-dental-disease -
Hybrid cells cause chaos around cancers
Rice University researchers have built a simulation to show how cancerous tumors manipulate blood-vessel growth for their own benefit. Like all cells, those in tumors need access to the body's fine network of blood vessels to bring them oxygen and carry away waste. Tumors have learned to game the process called angiogenesis in which new vessels sprout from existing ones, like branches from a tree. But some details have been hidden until now. The ability to stop tumors through...
https://www.biyologlar.com/hybrid-cells-cause-chaos-around-cancers -
New procedure allows long-term culturing of adult stem cells
A new procedure developed at Massachusetts General Hospital (MGH) may revolutionize the culturing of adult stem cells. In their report that has been published online prior to its appearance in the August 6 issue of Cell Stem Cell, the team describes generating and expanding airway stem cells from the sorts of tissue samples collected during routine treatment of lung disorders. The overall approach appears applicable to several other tissue types, including skin and the linings of the...
https://www.biyologlar.com/new-procedure-allows-long-term-culturing-of-adult-stem-cells -
How our gut changes across the life course
Scientists and clinicians on the Norwich Research Park have carried out the first detailed study of how our intestinal tract changes as we age, and how this determines our overall health. As well as digesting food, the gut plays a central role in programming our immune system, and provides an effective barrier to bacteria that could make us ill. In particular, immune cells that line the gut work to maintain the integrity of the barrier, as well as maintaining a balance that provides a healthy...
https://www.biyologlar.com/how-our-gut-changes-across-the-life-course -
Breakthrough in scaling up life-changing stem cell production
Scientists have discovered a new method of creating human stem cells which could solve the big problem of the large-scale production needed to fully realise the potential of these remarkable cells for understanding and treating disease.
https://www.biyologlar.com/breakthrough-in-scaling-up-life-changing-stem-cell-production -
Gene Drive Technology: Where is the future?
Gene drive technologies may one day help alleviate the burden caused by diseases transmitted by mosquitoes and other animal vectors.
https://www.biyologlar.com/gene-drive-technology-where-is-the-future -
Gene Drive Technology: Where is the future?
Gene drive technologies may one day help alleviate the burden caused by diseases transmitted by mosquitoes and other animal vectors.
https://www.biyologlar.com/gene-drive-technology-where-is-the-future -
Quantum dots with impermeable shell: A powerful tool for nanoengineering
Images of ZnO quantum dots prepared by the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, taken by transmission electron microscopy. False colors.
https://www.biyologlar.com/quantum-dots-with-impermeable-shell-a-powerful-tool-for-nanoengineering -
Quantum dots with impermeable shell: A powerful tool for nanoengineering
Images of ZnO quantum dots prepared by the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, taken by transmission electron microscopy. False colors.
https://www.biyologlar.com/quantum-dots-with-impermeable-shell-a-powerful-tool-for-nanoengineering -
Uncovering the secrets of immune system invaders
The human immune system is a powerful and wonderful creation. If you cut your skin, your body mobilizes a series of different proteins and cells to heal the cut. If you are infected by a virus or bacteria, your immune system responds with a series of cells that attack the invader and neutralize it. But sometimes invaders find ways to exploit the very cells that are designed to protect us. Tuberculosis (Mycobacterium tuberculosis) and its lesser-known (and less virulent) relative Mycobacterium...
https://www.biyologlar.com/uncovering-the-secrets-of-immune-system-invaders -
Legions of nanorobots target cancerous tumors with precision
The legions of nanorobotic agents are actually composed of more than 100 million flagellated bacteria
https://www.biyologlar.com/legions-of-nanorobots-target-cancerous-tumors-with-precision -
Legions of nanorobots target cancerous tumors with precision
The legions of nanorobotic agents are actually composed of more than 100 million flagellated bacteria
https://www.biyologlar.com/legions-of-nanorobots-target-cancerous-tumors-with-precision -
Purest yet liver-like cells generated from induced pluripotent stem cells
This image shows induced pluripotent stem cells expressing a characteristic cell surface protein called SSEA4 (green).
https://www.biyologlar.com/purest-yet-liver-like-cells-generated-from-induced-pluripotent-stem-cells -
Purest yet liver-like cells generated from induced pluripotent stem cells
This image shows induced pluripotent stem cells expressing a characteristic cell surface protein called SSEA4 (green).
https://www.biyologlar.com/purest-yet-liver-like-cells-generated-from-induced-pluripotent-stem-cells