cell therapy | زیست فن

CRISPR “One Shot” Cell Therapy for Hemophilia Developed

CRISPR “One Shot” Cell Therapy for Hemophilia Developed Scientists at the Salk Institute have combined CRISPR-Cas9 gene editing with stem cell technology to generate a one-time, autologous cell therapy for the genetic blood clotting disorder hemophilia B. In vivo tests showed that gene-edited, stem cell–derived liver cells remained viable and functional in hemophiliac mice for nearly a year, after just …

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اخبار زیست فناوری | انگلیسی

NEA powers next-generation cell and gene therapy startup Senti to $53M series A round

NEA powers next-generation cell and gene therapy startup Senti to $53M series A round New Enterprise Associates (NEA) has led a $53 million bet on the future of cell and gene therapies. The series A round sets up JLABS resident Senti Biosciences to use advances in synthetic biology to create more targeted, controllable therapies than are advancing down clinical pipelines …

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اخبار زیست فناوری | انگلیسی

Senti launches to improve cell therapies with synthetic gene circuits

Senti launches to improve cell therapies with synthetic gene circuits Building circuits isn’t common in biotech labs, particularly labs developing cell-based therapies for cancer. Tim Lu, who studied computer science and electrical engineering as an undergraduate before going to medical school, wants to change that. But rather than build electronic circuits out of silicon, Lu, now a professor at MIT, …

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اخبار زیست فناوری | انگلیسی

Cell Therapy Developer Rubius Therapeutics Raises $100M More

Rubius Therapeutics said today it has raised $100 million in new financing to further support clinical development and manufacturing of its new red blood cell–derived therapies. The oversubscribed $100 million “crossover” financing brings to more than $220 million the amount of capital raised by the company. In June, Rubius closed on $120 million in a private financing round it said …

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اخبار زیست فناوری | انگلیسی

Cell Therapy Improves Muscular Dystrophy in More Ways Than One

Cell Therapy Improves Muscular Dystrophy in More Ways Than One A genetic disorder that causes progressive muscle degeneration is mostly visible because of the toll it takes on young patients, who eventually lose their ability to walk. However, the disorder, called Duchenne muscular dystrophy (DMD), also affects another muscle that’s not so visible: the heart. Most people with DMD lose …

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اخبار زیست فناوری | انگلیسی

Modification of CRISPR guide RNA structure prevents immune response in target cells

Modification of CRISPR guide RNA structure prevents immune response in target cells CRISPR-mediated genome editing has become a powerful tool for modeling of disease in various organisms and is being developed for clinical applications. Preassembled Cas9 ribonucleoproteins (RNPs) composed of the recombinant Cas9 protein and in vitrotranscribed (IVT) guide RNA complexes can be delivered into cells without risk of foreign …

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Cell-based therapy success could be boosted by new antioxidant - اخبار زیست فن

اخبار زیست فناوری | انگلیسی

تقویت سلول درمانی توسط آنتی اکسیدان جدید

Cell-based therapy success could be boosted by new antioxidant Cell therapies being developed to treat a range of conditions could be improved by a chemical compound that aids their survival, research suggests. Lab tests found that the man-made molecule – a type of antioxidant – helps to shield healthy cells from damage such as would be caused when they are …

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PHILADELPHIA - Combining the kinase inhibitor ibrutinib with an investigational personalized cellular therapy known as CTL119 can lead to complete remission in patients with high-risk chronic lymphocytic leukemia (CLL), according to new research from the Perelman School of Medicine at the University of Pennsylvania and Penn's Abramson Cancer Center (ACC). The team will present the results from its pilot study of this combination therapy during the 2017 American Society of Clinical Oncology (ASCO) Annual Meeting (Abstract # 193355). The team will present on the first 10 patients in the trial, each of whom had been taking ibrutinib for at least six months but had not achieved a complete remission. They were then infused with their own engineered "hunter" T cells. Eight of nine patients who are evaluable for response had no evidence of disease in their bone marrow at three months, and all remain in remission after a median follow-up period of six months, with a range from 0.5 to 9 months. One patient was found to have a partial response in their marrow. The research team is led by Carl June, MD, the Richard W. Vague Professor in Immunotherapy in the department of Pathology and Laboratory Medicine and director of Translational Research in the ACC, along with David Porter, MD, the Jodi Fisher Horowitz Professor in Leukemia Care Excellence and director of Blood and Marrow Transplantation in the ACC. The data will be presented by the study's first author, Saar Gill, MD, PhD, an assistant professor of Hematology-Oncology. "Combining ibrutinib with the CTL119 therapy achieved very powerful results for these patients, and with limited toxicity," Gill said. "This newer, coupled approach gives us hope that personalized cell therapies could be an important option for high-risk CLL patients on these types of drugs." CTL119 manufacturing begins with a patient's own T cells, some of which are removed and then reprogrammed in Penn's Clinical Cell and Vaccine Production Facility with a gene transfer technique designed to teach the T cells to target and kill tumor cells. The engineered cells contain an antibody-like protein known as a chimeric antigen receptor (CAR), which is designed to bind to a protein called CD19 found on the surface of cancerous B cells. The modified "hunter" cells are then infused back into the patient's body, where they multiply and are believed to attack the cancer cells. Patients in the trial had been on ibrutinib for a minimum of six months and had not achieved a complete response when they received an infusion of engineered cells split over three consecutive days. All had abnormalities of TP53 or ATM - two mutations associated with high-risk disease - and two patients had increasing BTK C481S clones, also a high-risk marker. The new data builds off several preclinical studies supporting the use of ibrutinib with CAR therapy. In March 2016, Penn researchers published a study in Blood that showed long-term ibrutinib treatment reverses the dysfunction of T cells in CLL and that combining CAR therapy with ibrutinib enhanced engineered T cell proliferation in mice. CAR therapy alone has led to complete remissions and responses in some CLL patients, but not all patients respond, findings that led the Penn team to seek combination therapies that might enhance efficacy of the therapy. In 2015, Penn Medicine researchers reported in Science Translational Medicine an overall response rate of 57 percent in CLL patients treated with CAR therapy, and a complete remission rate of 29 percent. Ibrutinib is a well-tolerated, oral drug that improves symptoms and survival in high-risk CLL patients, but is not curative and requires continuous treatment for life. It rarely induces complete remissions by itself. That first year on the drug may provide an optimal window to collect T cells from patients and subsequently administer a potentially curative T cell therapy, the authors said. "These patients had a lower disease burden and were treated earlier in the course of their disease, which distinguishes it from other studies," Gill said. "One of the challenges in treating CLL patients with personalized cellular therapy is not having healthy enough cells to manufacture. The results suggest that ibrutinib restored T cell activity in the patients. All 10 patients who received the CTL119 cells experienced mild cytokine release syndrome (CRS), a known potentially lethal type of toxicity, within a few days after receiving their infusions; however, none required treatment with tocilizumab, an immunosuppressant drug that blocks the effects of the inflammatory cytokine IL-6. All recovered from their CRS. CRS can include varying degrees of flu-like symptoms, with high fevers, nausea, and muscle pain, and temporary neurologic symptoms, including delirium, and in more severe cases, low blood pressure and breathing difficulties which may require treatment in an intensive care unit. One patient in the study developed tumor lysis syndrome and recovered. Longer follow-up will reveal the durability of these results, the authors said, and may support the evaluation of a first-line approach with ibrutinib and CAR therapy in an effort to remove the need for chronic therapy. ### This study was supported by a grant from Novartis. Editor's note: The University of Pennsylvania has licensed technologies involved in these trials to Novartis. Some of the scientists involved in these trials are inventors of these technologies. As a result of the licensing relationship with Novartis, the University of Pennsylvania receives significant financial benefit, and these inventers have benefitted financially and/or may benefit financially in the future. Additional disclosure information is available in the meeting abstracts. Penn Medicine is one of the world's leading academic medical centers, dedicated to the related missions of medical education, biomedical research, and excellence in patient care. Penn Medicine consists of the Raymond and Ruth Perelman School of Medicine at the University of Pennsylvania (founded in 1765 as the nation's first medical school) and the University of Pennsylvania Health System, which together form a $6.7 billion enterprise. The Perelman School of Medicine has been ranked among the top five medical schools in the United States for the past 20 years, according to U.S. News & World Report's survey of research-oriented medical schools. The School is consistently among the nation's top recipients of funding from the National Institutes of Health, with $392 million awarded in the 2016 fiscal year. The University of Pennsylvania Health System's patient care facilities include: The Hospital of the University of Pennsylvania and Penn Presbyterian Medical Center -- which are recognized as one of the nation's top "Honor Roll" hospitals by U.S. News & World Report -- Chester County Hospital; Lancaster General Health; Penn Wissahickon Hospice; and Pennsylvania Hospital -- the nation's first hospital, founded in 1751. Additional affiliated inpatient care facilities and services throughout the Philadelphia region include Good Shepherd Penn Partners, a partnership between Good Shepherd Rehabilitation Network and Penn Medicine. Penn Medicine is committed to improving lives and health through a variety of community-based programs and activities. In fiscal year 2016, Penn Medicine provided $393 million to benefit our community. For more Penn Medicine news from the 2017 American Society of Clinical Oncology Annual Meeting, visit: http://www.pennmedicine.org/news/asco-2017

اخبار زیست فناوری | انگلیسی

بهبودی کامل بیماری CLL

Personalized cell therapy combination achieves complete remission in CLL patients PHILADELPHIA – Combining the kinase inhibitor ibrutinib with an investigational personalized cellular therapy known as CTL119 can lead to complete remission in patients with high-risk chronic lymphocytic leukemia (CLL), according to new research from the Perelman School of Medicine at the University of Pennsylvania and Penn’s Abramson Cancer Center (ACC). …

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