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Defined supplement for single-cell cloning of human ES and iPS cells
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Overview
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Protocols and Documentation
Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.
Applications
This product is designed for use in the following research area(s) as part of the highlighted workflow stage(s). Explore these workflows to learn more about the other products we offer to support each research area.
Resources and Publications
Educational Materials (26)
Publications (51)
SIRPα ablated iPSC-derived macrophages resist hypophagia and enhance mAb-dependent and CAR-mediated cytotoxicity of solid tumors.
Molecular therapy. Oncology 2026 Jun
Abstract
The SIRPα-CD47 "don't eat me" checkpoint axis plays a critical role in shaping antitumor activities of macrophages within the tumor microenvironment (TME). However, targeting this axis with anti-CD47 antibodies to enhance antitumor responses in clinical trials has been challenging. Here, we demonstrated that SIRPA-knockout (KO) iPSC-derived macrophages (iMacs) exhibit superior antitumor activity against various CD47-expressing tumors in vitro when combined with cancer-targeted monoclonal antibodies (mAbs) or chimeric antigen receptors (CARs). Moreover, SIRPA-KO protected macrophages from mAb- and CAR-driven hypophagia, enabling efficient tumoricidal effects even after serial tumor exposures. Retention of phagocytic activities in SIRPA-KO iMacs was associated with heightened surface expression of Fc receptors and GD2-CAR compared to their SIRPA-expressing counterparts. Despite the powerful impact of SIRPA-KO on iMac antitumor activities in vitro, only modest efficacy was observed in human xenograft mouse models of SK-OV3 ovarian carcinoma and CHLA-163 neuroblastoma treated with mAb or CAR-iMac therapy, indicating further engineering or combinatorial therapeutic strategies are needed for potent in vivo antitumor efficacy. Together, these findings identify SIRPα as a regulator in macrophage hypophagia and underscore the advantages of using SIRPA-KO macrophage therapeutic strategies to modulate the SIRPα-CD47 checkpoint to unleash macrophage antitumor activity within the TME.
A Cell-Based Functional Assay Calibrated for Analysis of MSH6 and MSH2 Mismatch Repair Gene Variants.
Human mutation 2025 Sep
Abstract
Variants of uncertain significance (VUS) in the DNA mismatch repair (MMR) genes can confound the diagnosis and treatment of suspected Lynch syndrome (LS) patients. To aid the reclassification of VUS, we developed the in cellulo analysis of MMR variants (inCAMA) and used known control variants to calibrate this assay such that results can be readily applied as functional evidence by expert classification panels. We used CRISPR gene engineering to introduce known pathogenic and benign variants into the MSH6 or MSH2 loci in human embryonic stem cells and assessed their effects on cellular MMR repair and damage response functions. Our functional assay successfully discerned known pathogenic and benign variants. Using these results and performing a linear regression analysis with available odds of pathogenicity scores for the known calibration variants, we created equations that can generate a functional odds of pathogenicity score for any future MSH6 or MSH2 variant tested. In summary, inCAMA represents a new, calibrated assay for testing the function of virtually any MSH6 or MSH2 variant. The conversion of assay results directly into odds of pathogenicity scores makes it possible to use any PS3 or BS3 evidence strength level toward the reclassification of VUS.
A patient-specific engineered tissue model of BAG3-mediated cardiomyopathy
Journal of Tissue Engineering 2025 Sep
Abstract
Pathogenic mutations in Bcl2-associated athanogene 3 (BAG3) cause genetic dilated cardiomyopathy (DCM), a disease characterized by ventricular dilation, systolic dysfunction, and fibrosis. Previous studies have demonstrated that BAG3 mediates sarcomeric protein turnover through chaperone-assisted selective autophagy to maintain sarcomere integrity in the human heart. Although mouse models provide valuable insights into whole-organism effects of BAG3 knockout or pathogenic variants, their utility is limited by species-specific differences in pathophysiology, which often do not translate to humans and contribute to the failure of clinical trials. As a result, the development of induced pluripotent stem cell-derived cardiomyocytes (iCM) and engineered heart tissues presents a promising alternative for studying adult-onset cardiac diseases. Here, we used genome engineering to generate an isogenic pseudo-wild-type control cell line from a patient-derived iPSC line carrying a pathogenic BAG3 variant, clinically presenting with DCM. While monolayer iCMs recapitulated some features of BAG3-mediated DCM, such as reduced autophagy, mitochondrial membrane potential, and decreased HSPB8 stability, they failed to develop the age-associated impairment in sarcomere integrity. Therefore, we developed a mature, patient-specific, human engineered heart tissue model of BAG3-mediated DCM and compared it to its isogenic healthy control. We demonstrated successful recapitulation of adult-like features of the clinically observed disorganized sarcomeres and impaired tissue contractility, thereby providing a platform to investigate BAG3-related pathophysiology and therapeutic interventions. Graphical abstract
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PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED. FOR ADDITIONAL INFORMATION ON QUALITY AT º£½ÇÆƽâ°æ, REFER TO WWW.º£½ÇÆƽâ°æ.COM/COMPLIANCE.
PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED. FOR ADDITIONAL INFORMATION ON QUALITY AT º£½ÇÆƽâ°æ, REFER TO WWW.º£½ÇÆƽâ°æ.COM/COMPLIANCE.
