tsp-21 Antibody

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Product Specs

Buffer
**Preservative:** 0.03% Proclin 300
**Constituents:** 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
tsp-21 antibody; C17G1.8Tetraspanin-21 antibody
Target Names
tsp-21
Uniprot No.

Target Background

Function
TSP-21 Antibody regulates cell fate specification within the postembryonic mesodermal M lineage and body size. This regulation is likely achieved through positive modulation of BMP-like Sma/Mab signaling at the ligand-receptor level. Furthermore, TSP-21 Antibody promotes ventral fate specification in the M lineage, potentially by positively influencing lin-12/Notch signaling.
Database Links

KEGG: cel:CELE_C17G1.8

STRING: 6239.C17G1.8

UniGene: Cel.25081

Protein Families
Tetraspanin (TM4SF) family
Subcellular Location
Cell membrane; Multi-pass membrane protein. Basolateral cell membrane; Multi-pass membrane protein. Cytoplasmic vesicle membrane; Multi-pass membrane protein.

Q&A

FAQs for TSP-21 Antibody Research

Advanced Research Questions

  • How to resolve contradictions in TSP-21 antibody performance across different disease models (e.g., HAM/TSP vs. cancer)?

    • Methodology:

      • Context-Specific Validation: Profile TSP-21 expression levels in distinct microenvironments (e.g., CNS vs. tumor stroma) using multiplex IHC.

      • Functional Pathway Analysis: Compare signaling outcomes (e.g., TGF-β vs. IFN-α pathways) via phosphoproteomics or RNA-seq in each model .

      • Structural Insights: Use cryo-EM or molecular dynamics simulations to assess conformational changes in TSP-21 under varying pH or ligand conditions .

  • What computational strategies optimize TSP-21 antibody humanization while preserving affinity?

    • Methodology:

      • Framework Selection: Use consensus human immunoglobulin sequences (e.g., VH3/VK1 families) to minimize immunogenicity while retaining CDR stability .

      • In Silico Mutagenesis: Predict destabilizing residues via tools like RosettaAntibody and prioritize substitutions with ΔΔG < 2 kcal/mol .

      • Manufacturability Screening: Assess aggregation-prone regions using tools such as CamSol and optimize codon usage for CHO or HEK expression systems .

Data Tables

Table 1: Key Immune Cell Alterations in HAM/TSP Patients vs. Asymptomatic Carriers

Cell TypeHAM/TSP PatientsAsymptomatic CarriersFunctional Implication
Plasmacytoid DCs↓ FrequencyBaselineImpaired antiviral IFN-α response
Myeloid DCs↑ FrequencyBaselineSustained inflammatory signaling
Non-classical MonocytesNo changeNo changeContext-dependent phagocytosis

Table 2: Antibody Engineering Workflow for Humanization

StepKey ConsiderationsTools/Assays
CDR GraftingRetain critical framework residues (e.g., VH37, VL9)IMGT/3D structure alignment
Affinity MaturationOptimize van der Waals interactions in CDR-H3Alanine scanning mutagenesis
DevelopabilityReduce hydrophobic patches in Fc regionSEC-HPLC, DSF

Methodological Recommendations

  • For Mechanistic Studies: Combine single-cell RNA-seq (e.g., 10x Genomics) with high-parameter flow cytometry to dissect TSP-21’s role in myeloid cell dysregulation .

  • For Preclinical Testing: Use humanized mouse models reconstituted with patient-derived PBMCs to evaluate antibody efficacy in vivo .

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