Endogenous gene activation by programmable transcription factors offers gene-dose-dependent phenotyping of target cells embedded in their in vivo natural tissue environment. Modified CRISPR/Cas9 systems were developed to be used as guide (g) RNA programmable transcriptional activation platforms (CRISPRa) in vitro and in vivo allowing targeted or multiplexed gene activation studies. We specifically developed these tools to be applied in cardiomyocytes providing dCas9VPR expressing mice under the control of the Myosin heavy chain 6 (Myh6) promoter. Here, we describe a protocol for the efficient design and validation of newly identified gRNA for enhancing transcriptional activity of a selected gene of interest. Additionally, we are providing insights into a downstream application in a dCas9VPR expressing mouse model specifically for cardiomyocyte biology.
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http://dx.doi.org/10.1007/978-1-0716-2707-5_5 | DOI Listing |
Plant Cell Rep
January 2025
Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo, Hokkaido, 060-8589, Japan.
We generated soybean mutants related to two ß-amyrin synthase genes using DNA-free site-directed mutagenesis system. Our results suggested that one of the genes is predominant in the soyasaponin biosynthesis. Soyasaponins, which are triterpenoid saponins contained in soybean [Glycine max (L.
View Article and Find Full Text PDFJ Integr Plant Biol
January 2025
State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
Using an optimized CRISPR/Cas9 system to knock out the BTB-POZ and MATH domain gene BoBPM6 and the DOWNY MILDEW RESISTANCE 6 gene in Brassica oleracea resulted in new lines with broad-spectrum disease resistance.
View Article and Find Full Text PDFCureus
December 2024
Department of Pediatrics, University of Yamanashi, Chuo, JPN.
The T315I-inclusive compound mutation, the multiple mutations including the T315I mutation on the same BCR::ABL1 gene, confers resistance to diverse tyrosine kinase inhibitors (TKIs). Development of the F311I/T315I compound mutation has been reported in chronic myeloid leukemia patients who sequentially showed clinical resistance to imatinib and dasatinib. The establishment of a human leukemia model with the T315I-inclusive compound mutation remains an experimental challenge.
View Article and Find Full Text PDFFront Med (Lausanne)
January 2025
Kapadi, Inc., Raleigh, NC, United States.
Gene therapy has long been a cornerstone in the treatment of rare diseases and genetic disorders, offering targeted solutions to conditions once considered untreatable. As the field advances, its transformative potential is now expanding into oncology, where personalized therapies address the genetic and immune-related complexities of cancer. This review highlights innovative therapeutic strategies, including gene replacement, gene silencing, oncolytic virotherapy, CAR-T cell therapy, and CRISPR-Cas9 gene editing, with a focus on their application in both hematologic malignancies and solid tumors.
View Article and Find Full Text PDFCurr Gene Ther
January 2025
Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
The evolution of genetic exploration tools, from laborious methods like radiationinduced mutations to the transformative CRISPR-Cas9 system, has fundamentally reshaped genetic research and gene editing capabilities. This journey, initiated by foundational techniques such as ZFNs and TALENs and culminating in the groundbreaking work of Doudna and Charpentier in 2012, has ushered in an era of precise DNA alteration and profound insights into gene functions. The CRISPR/Cas9 system uses the Cas9 enzyme and guides RNA (gRNA) to precisely target and cleave DNA, with subsequent repair via error-prone NHEJ or precise HDR, enabling versatile gene editing.
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