Reactivity | MuSpecies Glossary |
Applications | Bioactivity |
Format | Carrier-Free |
Details of Functionality | Measured in a cell proliferation assay using BaF3 mouse pro‑B cells transfected with mouse IL-7 R alpha . The ED50 for this effect is 0.5-2.5 ng/mL. |
Source | Mouse myeloma cell line, NS0-derived mouse TSLP protein Tyr20-Glu140, with a C-terminal 10-His tag |
Accession # | |
N-terminal Sequence | Tyr20 |
Protein/Peptide Type | Recombinant Proteins |
Gene | Tslp |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
Endotoxin Note | <0.1 EU per 1 μg of the protein by the LAL method. |
Dilutions |
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Theoretical MW | 15 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
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SDS-PAGE | 22-29 kDa, reducing conditions |
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Publications |
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Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Lyophilized from a 0.2 μm filtered solution in PBS. |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
Reconstitution Instructions | Reconstitute at 100 μg/mL in sterile PBS. |
Thymic Stromal Lymphopoietin (TSLP) was originally identified as an activity from the conditioned medium of a mouse thymic stromal cell line that promoted the development of B cells. The activities of mouse TSLP overlap with, but are distinct from, those of mouse IL-7. Both mouse TSLP and IL-7 can co-stimulate growth of thymocytes and mature T cells, and support B lymphopoiesis in long-term cultures of fetal liver cells and bone-marrow cells. Whereas mouse IL-7 facilitates the development of B220+/IgM- pre-B cells, mouse TSLP promotes the development B220+/IgM+ B cells. Human TSLP was reported to preferentially stimulate myeloid cells; inducing the release of T cell-attracting chemokines from monocytes and enhancing the maturation of CD11c+ dendritic cells. Mouse TSLP cDNA encodes a 140 amino acid (aa) residue precursor protein with a 19 aa signal sequence. Within the mature region, there are three potential N-glycosylation sites and 7 cysteine residues. Mouse TSLP shares approximately 43% aa sequence identity with human TSLP. The gene for mouse TSLP has been localized to chromosome 18. By Northern and RT-PCR analysis, mouse TSLP expression has been detected in spleen, thymus, kidney, lung and bone marrow. TSLP is proposed to signal through a heterodimeric receptor complex that consists of IL-7 R alpha and the TSLP R, a new member of the hemopoietin receptor family most closely related to R gamma c.
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