Recombinant Mouse Galectin-1 Protein

Beta LifeScience SKU/CAT #: BLPSN-2191

Recombinant Mouse Galectin-1 Protein

Beta LifeScience SKU/CAT #: BLPSN-2191
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Product Overview

Tag N/A
Host Species Mouse
Accession P16045
Synonym AA410090, Gal-1, Galbp, galectin-1, L-14.5, L14, Lect14
Background Galectin-1 (Gal-1, GAL1), is a member of the galectins, a family of animal lectins ranging from Caenorhabditis elegans to humans, which is defined by their affinity for beta-galactosides and by significant sequence similarity in the carbohydrate-binding site. It is a homodimer with a subunit molecular mass of 14.5 kDa, which contains six cysteine residues per subunit. The cysteine residues should be in a free state in order to maintain a molecular structure that is capable of showing lectin activity. This endogenous lectin widely expressed at sites of inflammation and tumour growth, has been postulated as an attractive immunosuppressive agent to restore immune cell tolerance and homeostasis in autoimmune and inflammatory settings. On the other hand, galectin-1 contributes to different steps of tumour progression including cell adhesion, migration and tumour-immune escape, suggesting that blockade of galectin-1 might result in therapeutic benefits in cancer. Several potential glycoprotein ligands for galectin-1 have been identified, including lysosome-associated membrane glycoproteins and fibronectin, laminin, as well as T-cell glycoproteins CD43 and CD45. Evidence points to Gal-1 and its ligands as one of the master regulators of such immune responses as T-cell homeostasis and survival, T-cell immune disorders, inflammation and allergies as well as host-pathogen interactions.
Description A DNA sequence encoding the mouse Lgals1 (P16045) (Met 1-Glu 135) was expressed and purified.
Source E.coli
Predicted N Terminal Met 1
AA Sequence Met 1-Glu 135
Molecular Weight The recombinant mouse Lgals1 consists of 135 a.a. and migrates as an approximately 15 kDa band as predicted in SDS-PAGE under reducing conditions.
Purity >95% as determined by SDS-PAGE
Endotoxin Please contact us for more information.
Bioactivity Measured by its ability to agglutinate human red blood cells. The ED50 for this effect is typically 1-5 ug/ml.
Formulation Lyophilized from sterile PBS, 100mM beta-Lactose, pH 7.4.
Stability The recombinant proteins are stable for up to 1 year from date of receipt at -70°C.
Usage For Research Use Only
Storage Store the protein under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

Target Details

Target Function Lectin that binds beta-galactoside and a wide array of complex carbohydrates. Plays a role in regulating apoptosis, cell proliferation and cell differentiation. Inhibits CD45 protein phosphatase activity and therefore the dephosphorylation of Lyn kinase. Strong inducer of T-cell apoptosis.
Subcellular Location Secreted, extracellular space, extracellular matrix. Cytoplasm. Secreted.
Database References

Gene Functions References

  1. Overexpression of galectin-1 inhibited the proliferation of T-cells by means of HSC activation, which reduced the inflammatory response by exerting immunosuppressive effects and furthermore enhanced immune tolerance and alleviated hepatic fibrosis in liver transplantation. PMID: 30032146
  2. Gal-1 is a major driver of pancreatic cancer progression. Genetic deletion of Gal1 in a Kras-driven mouse model of pancreatic ductal adenocarcinoma results in a significant increase in survival through mechanisms involving decreased stroma activation, attenuated vascularization, and enhanced T cell infiltration leading to diminished metastasis rates. PMID: 29615514
  3. This work identified Gal1, an endogenous immune regulatory lectin, as an integral component of the secretory granule machinery and unveil the unexpected function of this lectin in regulating CTL killing activity. PMID: 29215607
  4. The results of this study showed that development of spinal axons as well as the locomotor abilities observed in adult mice are independent of Gal-1. PMID: 28512739
  5. GAL-1 also enhanced the generation of neural crest cells from explanted neural tubes PMID: 28695960
  6. this present study indicated that Gal-1 secreted from MSCs upregulated expression of Gal-1 and stimulated formation of tolerance immunophenotype on DCs, where the underlying mechanism was the regulation of the MAPK signaling pathway in DCs, thereby inhibiting the function of DCs PMID: 28713822
  7. markedly increased brain Gal-1 and S-nitrosylated Gal-1 both in scrapie-infected rodents and human prion diseases. PMID: 27211330
  8. Gal-1 can limit eosinophil recruitment to allergic airways and suppresses airway inflammation by inhibiting cell migration and promoting eosinophil apoptosis. PMID: 27457925
  9. Gal1 protein is essential for efficient liver regeneration following partial hepatectomy through the regulation of liver inflammation, hepatic cell proliferation, and the control of lipid storage in the regenerating liver. PMID: 27166189
  10. findings show that galectin-1 (Gal-1), an immunoregulatory lectin widely expressed in mucosal tissues, contributes to Y. enterocolitica pathogenicity by undermining protective antibacterial responses. PMID: 28716827
  11. Gal-1 functions as an important regulator in RNV and offers a promising strategy for the treatment of RNV diseases, such as proliferative diabetic retinopathy and retinopathy of prematurity. PMID: 28257831
  12. These findings demonstrate that galectin-1 is required for i.v. tolerance induction, likely via induction of tolerogenic DCs leading to enhanced development of Tr1 cells, Treg cells, and downregulation of proinflammatory responses. PMID: 27151444
  13. this study shows that galectin-1 secreted by Sertoli cells plays a pivotal role in the differentiation of functionally tolerogenic dendritic cells PMID: 26878424
  14. analysis of the effect of low-temperature plasma on the expression of galectin-1, -2, and -3 in the healing skin compared with those of electrocoagulation conducted with a high-frequency electrical coagulator PMID: 26827730
  15. Gal-1 does not play a role in the systemic immunosuppressive effect of Mesenchymal stem cells. PMID: 26857229
  16. Galectin-1 has a role in driving lymphoma CD20 immunotherapy resistance in a mouse model PMID: 26888257
  17. These findings highlight the importance of the inflammatory micro-environment of mucosal tissues in modulating intestinal epithelial cells susceptibility to the immunoregulatory lectin Gal-1 and its role in epithelial cell homeostasis. PMID: 26566180
  18. results unveil a dual role of endogenous versus exogenous Gal-1 in the control of autoimmune testis inflammation. PMID: 26223819
  19. Comparative transcriptome analyses identified Galectins 1 and 3 not only as markers in the lesioned adult cerebral cortex, but also as regulators of the proliferating and neurosphere-forming capacity of a subset of reactive astrocytes PMID: 26250529
  20. GAL-1 is valuable biomarker of surgical stress after cardiac surgery. PMID: 26261609
  21. The authors found that exposure of HL-1 cardiac cells to Gal-1 reduced the percentage of infection by two different Trypanosoma cruzi strains, Tulahuen (TcVI) and Brazil (TcI). PMID: 26451839
  22. GAL1/pre-B-cell receptor interaction modifies GAL1/glycan affinity and particularly inhibits binding to LacNAc containing epitopes PMID: 25708191
  23. Data indicate the relevance of the galectin-1 (Gal-1)-glycan axis in sperm function with implications in mammalian reproductive biology. PMID: 26136479
  24. Galectin-1 accumulates in neurofilamentous lesions in SOD1(G93A) mice, as previously reported in humans with amyotrophic lateral sclerosis ( PMID: 24707896
  25. it is shown that CRH and UCN upregulate galectin-1 expression in Ishikawa cell line and macrophages and this effect is mediated through CRHR1. PMID: 25473847
  26. investigated the Citrobacter rodentium model of colonic infection and inflammation in Galectin-1 or Galectin-3 null mice PMID: 25243744
  27. These findings define a novel role for galectin-1 in inhibiting tissue emigration of immunogenic, but not tolerogenic, dendritic cells, providing an additional mechanism by which galectin-1 can dampen immune responses. PMID: 26216879
  28. These results suggested a novel role of inGal-1 in T-cells as a regulator of T-cell response to exGal-1, and its likely contribution to the mechanism in T-cell apoptosis deficiency in lupus. PMID: 25468561
  29. These findings indicate that galectin-1 is a key regulator of wound repair that has therapeutic potential for pathological or imperfect wound healing. PMID: 25007042
  30. Our results show that Gal-1, mainly in its dimeric form, promotes functional recovery of spinal lesions by interfering with inhibitory signals triggered by Sema3A binding to NRP-1/PlexinA4 complex. PMID: 24561343
  31. These results underline the essential role of Gal-1 during endometriosis PMID: 24979200
  32. Data show that plasma Galectin-1(GAL-1) level is significantly raised as early as 4 hours following myocardial infarction (MI). PMID: 24498007
  33. Genetic ablation of Gal1 in a mouse model of pancreatic ductal adenocarcinoma dampened tumor progression by inhibiting proliferation, angiogenesis, desmoplasic reaction and by stimulating a tumor-associated immune response. PMID: 24812270
  34. results indicate gal-1 is expressed in interneurons in the hippocampus that also express beta-tubulin III; findings suggest interneurons, which extend axons to form synapses, secrete gal-1 during neuronal pathfinding in the hippocampus PMID: 24323124
  35. Galectin-1 could be an essential mediator in the control of macrophage function during the resolution of inflammation. PMID: 23954858
  36. results strengthen the notion that Gal-1 is required for healthy gestation and highlight Gal-1 as a valuable biomarker for early PE diagnosis PMID: 23798433
  37. Absence of endogenous Gal-1 results in an exacerbation of disease, in terms of both incidence and clinical severity. PMID: 23720814
  38. Loss of Galectin-1 is associated with liver allograft rejection. PMID: 23356407
  39. Galectin-1 controls cardiac inflammation and ventricular remodeling during acute myocardial infarction. PMID: 23142379
  40. Endogenous expression of galectin-1 contributes to skin graft survival in the mouse. PMID: 22865279
  41. These findings provide insights on the selective proapoptotic role of Gal-1 for a subpopulation of GABAergic interneurons PMID: 23115194
  42. galectin-1 is one of the critical factors in MSCs regulating tumor progression PMID: 22844466
  43. Galectin-1 is a pivotal regulator of M1 microglial activation that targets the activation of p38MAPK-, CREB-, and NF-kB-dependent signaling pathways and hierarchically suppresses downstream proinflammatory mediators, such as iNOS, TNF, and CCL2. PMID: 22884314
  44. It was shown that the highly expressed galectin 1 in aggressive melanoma actively participates in metastasis. A role was shown for galectin 1 in the senescence of lung microvascular endothelial cells at the metastatic site. PMID: 22622427
  45. galectin-1 inhibition reduces murine lung metastasis with increased CD4(+) and CD8 (+) T cells and reduced cancer cell adherence PMID: 22484915
  46. gal-1 treatment represents a useful approach to control lesion severity in a virally induced immunopathological disease. PMID: 22467659
  47. Gal-1 stimulated naive T cells, but had an antiproliferative effect when these cells were activated. When 2 Gal-1 molecules were covalently fused, the chimeric protein promoted proliferation suggesting that a tandem-repeat structure is required. PMID: 22357632
  48. expression correlates with tumor growth rate, metastatic capacity and response to cyclophosphamide in T-cell lymphoma models PMID: 21947259
  49. Lung cancer-derived galectin-1 enhances tumorigenic potentiation of tumor-associated dendritic cells by expressing heparin-binding EGF-like growth factor. PMID: 22291012
  50. Have identified galectin-1 and galectin-3 as novel partners for VWF, and these proteins may modulate VWF-mediated thrombus formation. PMID: 22267483


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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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