Cell Therapy News Volume 22.16 | May 3 20201

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    2021-05-03 | CTN 22.16


    Cell Therapy News by STEMCELL Technologies
    Vol. 22.16 – 3 May, 2021
    TOP STORY

    CRISPR Prime Editing with Ribonucleoprotein Complexes in Zebrafish and Primary Human Cells

    Investigators demonstrated prime editing with purified ribonucleoprotein complexes. They introduced somatic mutations in zebrafish embryos with frequencies as high as 30% and demonstrated germline transmission.
    [Nature Biotechnology]

    Abstract
    Scientific resources to support your cell therapy research. Learn More!
    PUBLICATIONSRanked by the impact factor of the journal

    SynNotch-CAR T Cells Overcome Challenges of Specificity, Heterogeneity, and Persistence in Treating Glioblastoma

    In immunodeficient mice bearing intracerebral patient-derived xenografts with heterogeneous expression of EGFRvIII, a single intravenous infusion of epidermal growth factor receptor splice variant III synNotch-CAR T cells demonstrated higher antitumor efficacy and T cell durability.
    [Science Translational Medicine]

    Full ArticlePress Release

    SynNotch CAR Circuits Enhance Solid Tumor Recognition and Promote Persistent Antitumor Activity in Mouse Models

    Researchers improved the specificity and persistent antitumor activity of therapeutic T cells with synthetic Notch CAR circuits.
    [Science Translational Medicine]

    Full ArticlePress Release

    Pooled CRISPR Screening Identifies m6A as a Positive Regulator of Macrophage Activation

    Scientists identified major m6A “writers” as the top candidate genes regulating macrophage activation by LPS in an RNA binding protein focused CRISPR screening.
    [Science Advances]

    Full Article

    CAR and TRuC Redirected Regulatory T Cells Differ in Capacity to Control Adaptive Immunity to FVIII

    The authors sought to engineer antigen-specific T regulatory cells to suppress antibody formation against the soluble therapeutic protein factor VIII in an MHC-independent fashion.
    [Molecular Therapy]

    AbstractFull ArticleGraphical Abstract

    CRISPR-Edited CART with GM-CSF Knockout and Auto Secretion of IL6 and IL1 Blockers in Patients with Hematologic Malignancy

    To minimize GM-CSF production from CART to reduce its associated toxicity, scientists conducted a pilot study of CRISPR-edited GM-CSF knockout (KO) in CART secreting anti-IL6 scFv and IL1RA, with additional TCR KO for tracing edited CART.
    [Cell Discovery]

    Full Article

    Mesenchymal Stromal Cell Therapy in Novel Porcine Model of Diffuse Liver Damage Induced by Repeated Biliary Obstruction

    Researchers evaluated the effect of allogenic mesenchymal stem cell transplantation in a large animal model of repeated biliary obstruction followed by partial hepatectomy.
    [International Journal of Molecular Sciences]

    Full Article

    A Tissue-Engineered Biocomplex for Periodontal Reconstruction. A Proof-of-Principle Randomised Clinical Study

    Scientists assessed the safety/efficacy of a tissue–engineered biocomplex in periodontal reconstruction.
    [Journal of Periodontology]

    Abstract

    Type 2 Alveolar Epithelial Cells Differentiated from Human Umbilical Cord Mesenchymal Stem Cells Alleviate Mouse Pulmonary Fibrosis through β-Catenin-Regulated Cell Apoptosis

    Scientists induced human umbilical cord-mesenchymal stem cells (hUC-MSCs) to differentiate into type 2 alveolar epithelial cells (AEC2s), and provided evidence that intratracheal transplantation of hUC-MSC-derived AEC2s could improve mortality and alleviate fibrosis in bleomycin-induced pulmonary fibrosis mice.
    [Stem Cells and Development]

    Abstract

    Intravitreal Gene Therapy Protects against Retinal Dysfunction and Degeneration in Sheep with CLN5 Batten Disease

    The authors performed intravitreal injections of self-complementary AAV9 vectors packaged with either ovine CLN5 or CLN6 into one eye of three-month-old CLN5−/− or CLN6−/− animals, respectively.
    [Experimental Eye Research]

    Abstract

    Ankle Osteonecrosis in Fifty-One Children and Adolescent’s Leukemia Survivors: A Prospective Randomized Study on Percutaneous Mesenchymal Stem Cells Treatment

    Investigators analyzed the outcome of this treatment osteonecrosis, the number and characteristics of bone marrow mesenchymal cells that could be transplanted, and the risks of tumorigenesis in these patients with hematologic cancers.
    [International Orthopaedics]

    Abstract
    Which Immune cell Are You?
    REVIEWS

    Engineered In Vitro Tumor Models for Cell-Based Immunotherapy

    The authors summarize the existing engineered tumor models with a focus on tumor immunology and cell-based immunotherapy. They also discuss some key considerations for the future development of engineered tumor models for immunotherapeutics.
    [Acta Biomaterialia]

    AbstractGraphical Abstract

    Reprogramming the Anti-Tumor Immune Response via CRISPR Genetic and Epigenetic Editing

    The basis for development, mechanism of action and outcomes from recently published Cas9-based clinical trial (genetic editing) and dCas9/Cas13-based pre-clinical (epigenetic editing) data are discussed.
    [Molecular Therapy-Methods & Clinical Development]

    AbstractFull ArticleGraphical Abstract

    INDUSTRY AND POLICY NEWS

    Six Patients with Dementia Went to Mexico for an Unproven Gene Therapy, a Biotech CEO Claims

    Six patients with dementia traveled to Mexico last year to be injected with a gene therapy not authorized for use in the US, according to the CEO of a Seattle-area startup that wants to accelerate testing of unproven anti-aging medicines and views US drug safety regulations as a hindrance.
    [STAT News]

    Press Release

    Tessa Therapeutics Announces Enrollment of 12 Patient Pilot Cohort in its Relapsed or Refractory Hodgkin Lymphoma Phase II Study

    Tessa Therapeutics Ltd. announced enrollment of 12 patient Pilot cohort of its Phase II trial in relapsed/refractory Classical Hodgkin Lymphoma (R/R cHL). The next step in the two-part study is enrollment of the 82 patient Pivotal cohort to assess the safety and antitumor efficacy of Tessa’s autologous CD30 CAR-T in R/R cHL.
    [Tessa Therapeutics Ltd.]

    Press Release
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    JOB OPPORTUNITIES

    Senior Researcher – Clinical Genome Editing

    St. Jude Children’s Research Hospital – Memphis, Tennessee, United States

    Assistant, Associate, Full Professor – Stem Cell Biology and Regenerative/Restorative Medicine

    Stanford University – Stanford, California, United States

    Postdoctoral Researcher Fellowships – Center for Stem Cell and Regenerative Medicine

    Zhejiang University – Zhejiang, China

    Postdoctoral Fellow – Vascular Cell Signaling

    LSU Health Science Center – Shreveport, Louisianam United States

    Postdoctoral Fellow or Research Scientist – Cell and Gene Therapy of Cancer

    Rutgers University – New Brunswick, New Jersey, United States

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