Immune responses involving CD8⁺ T-cells are severely deficient, providing a model to assess the role of CD8⁺ cells and class I MHC in various experimental systems.

2021年1月29日 · After knocking-out surface expression of HLA class I molecules by targeting the B2M gene via CRISPR/Cas9, we also co-expressed a single-chain HLA-E molecule, thereby preventing NK cell fratricide of B2M-knockout (KO) cells via "missing self"-induced lysis.

2022年3月1日 · Here, we generated a B2M homozygous knockout somatic cell nuclear transfer-induced embryonic stem cell (SCNT-ESC) line using CRISPR/Cas9-mediated gene targeting. B2M KO cell line, which does not express HLA-I molecules on cell surface, has pluripotency and differentiation ability to three germ layers.

2024年11月5日 · SELPLG was found to be upregulated in B2M KO A20 cells compared to B2M WT cells. Tumor growth reduction was observed in both A20 B2M wt and KO cell transplanted groups treated with the SELPLG antibody, with a stronger tumor reduction effect in the KO group.

Highly efficient gene editing in primary myeloid cells is made possible by optimized non-viral delivery of CRISPR-Cas9. This enables single and multiplexed gene knockout in monocytes, macrophages, and dendritic cells to advance innate immunity research and cell therapy.

2021年1月28日 · After knocking-out surface expression of HLA class I molecules by targeting the B2M gene via CRISPR/Cas9, we also co-expressed a single-chain HLA-E molecule, thereby preventing NK cell fratricide of B2M-knockout (KO) cells via “missing self”-induced lysis.

NCG-B2m-KO is a triple-immunodeficient NCG mouse with a B2m gene knockout. B2M (also known as Ly-m11, beta2m, beta2-m, β2-microglobulin) is a component of the MHC complex essential for MHC I expression. NCG-B2m-KO mice express low levels of MHC I on cell membranes and are resistant to graft versus host disease (GvHD).

B2M KO cell line, which does not express HLA-I molecules on cell surface, has pluripotency and differentiation ability to three germ layers. This cell line provides a useful cell source for investigating immunogenicity of allogeneic ESCs and their derivatives for tissue regeneration.

NKG B2m KO mice are constructed by knocking out the B2m gene on the background of NKG mice. Compared with NKG mice, NKG B2m KO mice have a significantly longer survival period after PBMC transplantation and can be used for long-term studies of …

B-NDG B2m KO mice plus are well suited for human immune system engraftment. Human PBMC (5E6) were intravenous implanted into homozygote B-NDG B2m KO mice plus and B-NDG mice (female, 7-week-old, n=6).