Recombinant Mouse Interleukin-21(Il21)

Code CSB-YP887666MO
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Source Yeast
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Code CSB-EP887666MO
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Source E.coli
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Code CSB-EP887666MO-B
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP887666MO
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Source Baculovirus
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Code CSB-MP887666MO
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Source Mammalian cell
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Product Details

Purity >85% (SDS-PAGE)
Target Names Il21
Uniprot No. Q9ES17
Alternative Names Il21Interleukin-21; IL-21
Species Mus musculus (Mouse)
Expression Region 18-146
Protein Length Full Length of Mature Protein
Tag Info The following tags are available.
N-terminal His-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet Please contact us to get it.

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Target Background

Cytokine with immunoregulatory activity. May promote the transition between innate and adaptive immunity. Induces the production of IgG(1) and IgG(3) in B-cells. Implicated in the generation and maintenance of T follicular helper (Tfh) cells and the formation of germinal-centers. Together with IL6, control the early generation of Tfh cells and are critical for an effective antibody response to acute viral infection. May play a role in proliferation and maturation of natural killer (NK) cells in synergy with IL15. May regulate proliferation of mature B- and T-cells in response to activating stimuli. In synergy with IL15 and IL18 stimulates interferon gamma production in T-cells and NK cells. During T-cell mediated immune response may inhibit dendritic cells (DC) activation and maturation.
Gene References into Functions
  1. Injection of IL-21-expressing or IL-33-expressing plasmids facilitates clearance of pre-established genotype B strain designated BPS (BPS) persistence and protects cured mice from BPS re-challenge. PMID: 29242561
  2. this study shows that IL4 and IL21 cooperate to induce the high Bcl6 protein level required for germinal center formation PMID: 28875978
  3. This finding warrants future development of IL-21 and IL-7 co-expressing whole-cell cancer vaccines and their relevant combinatorial regimens. PMID: 27571893
  4. The studies link IL-21 to T cell ontogeny, self-reactivity, and humoral autoimmunity. PMID: 28978474
  5. IL-21 signaling has a critical role in optimal host resistance against Mycobacterium tuberculosis infection PMID: 27819295
  6. memory-like NK cells expansion depends on IL-21, and is involved in vaccine-induced protective immunity against a bacterial pathogen PMID: 27924822
  7. IL-6 is identified as a master regulator of IL-21 in effector CD8(+) T cells. PMID: 27670591
  8. Our work suggests that IL-21 regulates megakaryocyte development and platelet homeostasis. Thus, IL-21 may link immune responses to physiological or pathological platelet-dependent processes. PMID: 28057742
  9. we identify novel distal regulatory elements in the mouse Il21 locus and demonstrate a dynamic long-range chromatin interaction between the Il21 promoter and these regulatory elements, which contributes to the regulated expression of IL-21 PMID: 27067007
  10. this study shows that IL-21 acts as a potent inhibitor of a IL-17A-producing T-cell subset during Mycobacterium bovis Bacillus infection PMID: 27554052
  11. this study shows that combination of mIL-21 with HIV-1 vaccines leads to distinct enhancement of NK cells and T cell immune responses associated with immune protection PMID: 27062692
  12. The data of this study suggested that an increase in astrocyte-derived IL-21 expression in hippocampal subregions following KA-induced seizures may have potent regulatory effects on epileptogenesis. PMID: 27118610
  13. this study reveals a context-dependent role for IL-21 in sustaining effector phenotype CD8 T cells and influencing their migratory properties, accumulation, and functions. PMID: 26826252
  14. Dysregulated development of IL-17- and IL-21-expressing follicular helper T cells and increased germinal center formation in the absence of RORgammat. PMID: 26499265
  15. results demonstrate that, in the setting of lupus-like CD4 T cell-driven B cell hyperactivity, IL-21 signaling on Ag-specific donor CD8 T cells is critical for CTL effector maturation whereas a lack of IL-21R downregulates CTL responses that would otherwise limit B cell hyperactivity and autoantibody production PMID: 26792801
  16. IL-21 from microbiota-specific Th17 and/or Tfh cells contributes to robust intestinal IgA levels by enhancing IgA(+) CSR, IgA production and B-cell trafficking into the intestine. PMID: 25586558
  17. this report demonstrates a critical role for IL-21 in the generation of a primary effector CD8 T cell response to an infectious disease model. PMID: 26597007
  18. IL-21 drives the activation and expansion of a novel population of IL-13-producing Tc2 cells, which serve as a critical link between inflammation and fibrosis. PMID: 26519529
  19. these findings underscore the important collaboration between IL-4 and IL-21 in shaping T-dependent B cells antibody responses. PMID: 26491200
  20. IL-21-mediated signaling supports generation and stabilization of pathogenic Th17 cells and development of spontaneous autoimmunity. PMID: 26413871
  21. In vivo treatment with IL-21 results in complete mantle cell lymphoma regression in syngeneic mice via natural killer - and T-cell-dependent mechanisms. PMID: 26194763
  22. genetic deficiency results in reduced Th2 type response during allergic airway inflammation PMID: 26287681
  23. Data indicate that interleukin 21 knockout (il-21-/-) mice showed significantly diminished T follicular helper cell (TFH) generation/accumulation compared to wild type mice. PMID: 25251568
  24. The results indirectly provide evidence that IL-21 produced by CD4(+) T cells could promote Th1/Tc1 response, leading to systemic inflammation in emphysema. PMID: 24357415
  25. IL-21 suppresses the development of Th2 cells and functions of polarized Th2 cells. PMID: 25351608
  26. Inflammation and lymphopenia trigger autoimmunity by suppression of IL-2-controlled regulatory T cell and increase of IL-21-mediated effector T cell expansion. PMID: 25339665
  27. IL-21 blockage decreases BAFF levels, modulates T-cell function in acute GVHD, attenuates GVHD by inhibiting mTORC, and modulates B-cell homeostasis. PMID: 25246268
  28. In comparison with the DC-hgp100 or mIL-21 groups, the combinational DC-hgp100/mIL-21 vaccine drastically suppressed the myeloid-derived suppressor cells (MDSCs) and T-regulatory (Treg) cell populations. PMID: 24572790
  29. Data suggest that IL-21 exerts negative regulation on IRF4 and Treg activity, developing and maintaining adipose tissue inflammation in the obesity state. PMID: 24430438
  30. Under IL-2 deprivation conditions, IL-21 may act as the major survival factor promoting T cell immune responses. PMID: 24416451
  31. GM-SCF, IL-21 and Rae1 expression, alone or in combination, induces a cellular immune response against H22 tumor cells. PMID: 24350772
  32. IL-21 is highly up-regulated in the injured mouse brain after cerebral ischemia. PMID: 24616379
  33. Opposing actions of IL-2 and IL-21 on Th9 differentiation correlate with their differential regulation of BCL6 expression. PMID: 24550509
  34. CD86 expression has functional consequences for the magnitude of CD4 T cell responses both in vitro and in vivo. These data pinpoint CD86 upregulation as an additional mechanism by which IL-21 can elicit immunomodulatory effects. PMID: 24470500
  35. interleukin-21 enhances rituximab activity PMID: 23825648
  36. results indicate that besides IL-21, IL-21iso may be another regulator of gut inflammation PMID: 23557800
  37. IL-21 signaling to B cells is essential for the development of all classical disease manifestations, but IL-21 signaling also supports the expansion of central memory, CD8(+) suppressor cells and broadly represses the cytokine activity of CD4(+) T cells. PMID: 24078696
  38. IL-21 may also indirectly promote CD8+ T cell poly-functionality by restricting the suppressive activity of infection-induced Treg cells. PMID: 23696736
  39. a key role for IL-21 in shaping the humoral and cellular response to T. gondii PMID: 23667536
  40. IL-21 plays a critical role in regulating central nervous system immunity during viral encephalitis by sustaining viral persistence and preventing mortality. PMID: 23992866
  41. REsults suggest IL-21 is not required for follicular helper t-cell differentiation and function and IL-21 must act on B cells PMID: 23960240
  42. Notably, Th17 differentiation in the absence of NR4A2 was restored by exogenous IL-21, indicating that NR4A2 controls full maturation of Th17 cells via autocrine IL-21 signalling PMID: 23437182
  43. required for induction of type I diabetes PMID: 23607664
  44. These preliminary data show that IL-21 is critical for the development of optimal vaccine-induced primary but not secondary antibody responses against rabies virus infections. PMID: 23516660
  45. Interleukin-21 is a critical cytokine for the generation of virus-specific long-lived plasma cells. PMID: 23637417
  46. Secreted IL-21 isoform also has less signaling activity than IL-21. PMID: 23312859
  47. IL-21 mRNA is reduced in the spleens of lyn(-/-) IL-6(-/-) and lyn(-/-) Btk(lo) mice. PMID: 23169140
  48. Together, these results showed for the first time that IL-21 influences the biology and the effector activity of Natural killer dendritic cells. PMID: 23098768
  49. Local suppression of IL-21 alleviated secretory disfunction and disrupted lymphocyte infiltration in submandibular glands of NOD mice and thus retarded the development of Sjorgren's-like symptoms of NOD mice. Tfh cells were also inhibited. PMID: 22643047
  50. Results indicate a reciprocal production of IL-21 and GM-CSF in T4 cells. PMID: 23453633

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Subcellular Location Secreted.
Protein Families IL-15/IL-21 family
Tissue Specificity Expressed in CD4(+) T cells.
Database Links

KEGG: mmu:60505

STRING: 10090.ENSMUSP00000029273

UniGene: Mm.157689

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