How will CRISPR evolve in the future?

VICTORIA REES | November 26, 2019 | 57 views

CRISPR is a tool used by researchers to precisely edit genes and has shown potential for treating genetic diseases. This article delves into some recent developments and explores what the future holds for CRISPR. CRISPR-Cas is a prokaryotic defence system whereby bacteria use RNA molecules and CRISPR-associated (Cas) proteins to target and destroy the DNA of invading viruses. This molecular machinery has been repurposed by researchers to target and edit specific sections of any DNA, whether bacterial or human.

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Morrison Healthcare Believes in the Power of Food. It’s all we do. Our people unleash the power of food, using it to touch lives and transform the healthcare experience. It’s what we do. It’s who we are. That’s the Morrison difference. “That’s the power of food.”

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MEDICAL

Top 10 biotech IPOs in 2019

Article | August 16, 2022

The big question at the start of 2019 was whether the IPO window would stay open for biotech companies, particularly those seeking to pull off ever-larger IPOs at increasingly earlier stages of development. The short answer is yes—kind of. Here’s the long answer: In the words of Renaissance Capital, the IPO market had “a mostly good year.” The total number of deals fell to 159 from 192 the year before, but technology and healthcare companies were standout performers. The latter—which include biotech, medtech and diagnostics companies—led the pack, making up 43% of all IPOs in 2019. By Renaissance’s count, seven companies went public at valuations exceeding $1 billion, up from five the year before

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MEDTECH

Cell Out? Lysate-Based Expression an Option for Personalized Meds

Article | July 13, 2022

Cell-free expression (CFE) is the practice of making a protein without using a living cell. In contrast with cell line-based methods, production is achieved using a fluid containing biological components extracted from a cell, i.e., a lysate. CFE offers potential advantages for biopharma according to Philip Probert, PhD, a senior scientist at the Centre for Process Innovation in the U.K.

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MEDTECH

Closing bacterial genomes from the human gut microbiome using long-read sequencing

Article | July 20, 2022

In our lab, we focus on the impact of the gut microbiome on human health and disease. To evaluate this relationship, it’s important to understand the particular functions that different bacteria have. As bacteria are able to exchange, duplicate, and rearrange their genes in ways that directly affect their phenotypes, complete bacterial genomes assembled directly from human samples are essential to understand the strain variation and potential functions of the bacteria we host. Advances in the microbiome space have allowed for the de novo assembly of microbial genomes directly from metagenomes via short-read sequencing, assembly of reads into contigs, and binning of contigs into putative genome drafts. This is advantageous because it allows us to discover microbes without culturing them, directly from human samples and without reference databases. In the past year, there have been a number of tour de force efforts to broadly characterize the human gut microbiota through the creation of such metagenome-assembled genomes (MAGs)[1–4]. These works have produced hundreds of thousands of microbial genomes that vastly increase our understanding of the human gut. However, challenges in the assembly of short reads has limited our ability to correctly assemble repeated genomic elements and place them into genomic context. Thus, existing MAGs are often fragmented and do not include mobile genetic elements, 16S rRNA sequences, and other elements that are repeated or have high identity within and across bacterial genomes.

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Selexis Cell Line Development Strategies

Article | February 11, 2020

In today’s biotechnology landscape, to be competitive, meet regulations, and achieve market demands, “we must apply Bioprocessing 4.0,” said Igor Fisch, PhD, CEO, Selexis. In fact, in the last decade, “Selexis has evolved from cloning by limiting dilution to automated cell selection to nanofluidic chips and from monoclonality assessment by statistical calculation to proprietary bioinformatic analysis,” he added. Single-use processing systems are an expanding part of the biomanufacturing world; as such, they are a major component of Bioprocessing 4.0. “At Selexis, we use single use throughout our cell line development workflow. Currently, we have incorporated single-use automated bioprocessing systems such as ambr® and the Beacon® optofluidic platform for accelerated cell line development. By using these systems and optimizing our parameters, we were able to achieve high titers in shake flasks. Additionally, the Beacon systems integrate miniaturized cell culture with high-throughput liquid handling automation and cell imaging. This allows us to control, adjust, and monitor programs at the same time,” noted Fisch.

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Morrison Healthcare

Morrison Healthcare Believes in the Power of Food. It’s all we do. Our people unleash the power of food, using it to touch lives and transform the healthcare experience. It’s what we do. It’s who we are. That’s the Morrison difference. “That’s the power of food.”

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CRISPR Therapeutics, Vertex Report First Data from Trials of Gene-Editing Treatment CTX001

GEN | November 19, 2019

CRISPR Therapeutics and Vertex Pharmaceuticals today reported preliminary, mostly-positive safety and efficacy data from the first two patients enrolled in two Phase I/II trials assessing their CRISPR/Cas9 gene-edited therapy CTX001 for a pair of blood disorders—the first clinical trial of a gene-editing candidate sponsored by U.S. companies. “We are very encouraged by these preliminary data, the first such data to be reported for patients with beta thalassemia and sickle cell disease treated with our CRISPR/Cas9 edited autologous hematopoietic stem cell candidate CTX001,” CRISPR Therapeutics CEO Samarth Kulkarni, PhD, said in a statement. “These data support our belief in the potential of our therapies to have meaningful benefit for patients following a one-time intervention. We continue to enroll these studies as we drive forward to develop CRISPR/Cas9 therapies as a new class of transformative medicines to treat serious diseases.” Added Vertex Chairman, President and CEO Jeffrey Leiden, MD, PhD: “The data we announced today are remarkable and demonstrate that CTX001 has the potential to be a curative CRISPR/Cas9-based gene-editing therapy.”

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CRISPR Gene Editing Ability Improved by Specific Modifications of tracrRNA

GEN | November 11, 2019

Scientists at the City of Hope believe they may have found a way to sharpen the fastest, cheapest, and most accurate gene editing technique, CRISPR-Cas9, so that it can more successfully cut out undesirable genetic information. This improved cutting ability could one day fast-track potential therapies for HIV, sickle cell disease, and, potentially, other immune conditions. “Our CRISPR-Cas9 design may be the difference between trying to cut a ribeye steak with a butter knife versus slicing it with a steak knife,” said Tristan Scott, PhD, lead author of the study and a staff research scientist at City of Hope’s Center for Gene Therapy. “Other scientists have tried to improve CRISPR cutting through chemical modifications, but that’s an expensive process and is like diamond-coating a blade. Instead, we have designed a better pair of scissors you can buy at any convenience store.” The study, “Improved Cas9 activity by specific modifications of the tracrRNA,” published in Scientific Reports is the first time scientists have systematically gone through the guide RNA sequence to change it and improve CRISPR-Cas9 technology, Scott said. The Kevin Morris Lab at City of Hope has filed a patent application claiming this improved CRISPR-Cas9 design, which could result in a doubling of activity but the exact amount was dependent on the target site, Scott said.

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A Breath of Fresh CRISPR

GEN | November 04, 2019

Genome editing materials can’t just breeze into cells. Or can they? Even cells so well defended as lung and airway cells may admit wisps of genome editing proteins such as CRISPR-associated nucleases. All that’s needed is an inspired delivery method. One possibility is the aerosolization of amphiphilic peptides. Amphiphilic peptides combine hydrophilic and lipophilic properties and facilitate the translocation of proteins across membranes. These peptides are being evaluated for various applications, including genome editing. In fact, scientists from the University of Iowa, in collaboration with scientists from Feldan Therapeutics, recently used engineered amphiphilic peptides to deliver genome editing nucleases and ribonucleoproteins to cultured human airway epithelial cells and mouse lungs.

Read More

CRISPR Therapeutics, Vertex Report First Data from Trials of Gene-Editing Treatment CTX001

GEN | November 19, 2019

CRISPR Therapeutics and Vertex Pharmaceuticals today reported preliminary, mostly-positive safety and efficacy data from the first two patients enrolled in two Phase I/II trials assessing their CRISPR/Cas9 gene-edited therapy CTX001 for a pair of blood disorders—the first clinical trial of a gene-editing candidate sponsored by U.S. companies. “We are very encouraged by these preliminary data, the first such data to be reported for patients with beta thalassemia and sickle cell disease treated with our CRISPR/Cas9 edited autologous hematopoietic stem cell candidate CTX001,” CRISPR Therapeutics CEO Samarth Kulkarni, PhD, said in a statement. “These data support our belief in the potential of our therapies to have meaningful benefit for patients following a one-time intervention. We continue to enroll these studies as we drive forward to develop CRISPR/Cas9 therapies as a new class of transformative medicines to treat serious diseases.” Added Vertex Chairman, President and CEO Jeffrey Leiden, MD, PhD: “The data we announced today are remarkable and demonstrate that CTX001 has the potential to be a curative CRISPR/Cas9-based gene-editing therapy.”

Read More

CRISPR Gene Editing Ability Improved by Specific Modifications of tracrRNA

GEN | November 11, 2019

Scientists at the City of Hope believe they may have found a way to sharpen the fastest, cheapest, and most accurate gene editing technique, CRISPR-Cas9, so that it can more successfully cut out undesirable genetic information. This improved cutting ability could one day fast-track potential therapies for HIV, sickle cell disease, and, potentially, other immune conditions. “Our CRISPR-Cas9 design may be the difference between trying to cut a ribeye steak with a butter knife versus slicing it with a steak knife,” said Tristan Scott, PhD, lead author of the study and a staff research scientist at City of Hope’s Center for Gene Therapy. “Other scientists have tried to improve CRISPR cutting through chemical modifications, but that’s an expensive process and is like diamond-coating a blade. Instead, we have designed a better pair of scissors you can buy at any convenience store.” The study, “Improved Cas9 activity by specific modifications of the tracrRNA,” published in Scientific Reports is the first time scientists have systematically gone through the guide RNA sequence to change it and improve CRISPR-Cas9 technology, Scott said. The Kevin Morris Lab at City of Hope has filed a patent application claiming this improved CRISPR-Cas9 design, which could result in a doubling of activity but the exact amount was dependent on the target site, Scott said.

Read More

A Breath of Fresh CRISPR

GEN | November 04, 2019

Genome editing materials can’t just breeze into cells. Or can they? Even cells so well defended as lung and airway cells may admit wisps of genome editing proteins such as CRISPR-associated nucleases. All that’s needed is an inspired delivery method. One possibility is the aerosolization of amphiphilic peptides. Amphiphilic peptides combine hydrophilic and lipophilic properties and facilitate the translocation of proteins across membranes. These peptides are being evaluated for various applications, including genome editing. In fact, scientists from the University of Iowa, in collaboration with scientists from Feldan Therapeutics, recently used engineered amphiphilic peptides to deliver genome editing nucleases and ribonucleoproteins to cultured human airway epithelial cells and mouse lungs.

Read More

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