• 概述

• 产品描述 Mertansine, also called DM1 (and in some of its forms emtansine), is a thiol-containing maytansinoid that for therapeutic purposes is attached to a monoclonal antibody through reaction of the thiol group with a linker structure to create an antibody-drug conjugate (ADC). Mertansine is a tubulin inhibitor, meaning that it inhibits the assembly of microtubules by binding to tubulin (at the rhizoxin binding site). The monoclonal antibody binds specifically to a structure (usually a protein) occurring in a tumour, thus directing mertansine into this tumour. This concept is called targeted therapy. Trastuzumab emtansine also known as ado-trastuzumab emtansine and sold under the trade name Kadcyla, is an antibody-drug conjugate consisting of the humanized monoclonal antibody trastuzumab (Herceptin) covalently linked to the cytotoxic agent DM1. Trastuzumab alone stops growth of cancer cells by binding to the HER2 receptor, whereas trastuzumab emtansine undergoes receptor-mediated internalization into cells, is catabolized in lysosomes where DM1-containing catabolites are released and subsequently bind tubulin to cause mitotic arrest and cell death. Trastuzumab binding to HER2 prevents homodimerization or heterodimerization (HER2/HER3) of the receptor, ultimately inhibiting the activation of MAPK and PI3K/AKT cellular signalling pathways. Because the monoclonal antibody targets HER2, and HER2 is only over-expressed in cancer cells, the conjugate delivers the cytotoxic agent DM1 specifically to tumor cells.
• 产品名称 Anti-DM1 Recombinant Mouse Monoclonal Antibody [A4G3-R]
• 验证应用 ELISA
• 抗体类型 重组鼠单抗
• 免疫原 DM1 coupled with OVA.
• 偶联 Non-conjugated

• 性能

• 形态 Liquid
• 浓度 1 mg/mL.
• 存放说明 Store at +4℃ after thawing. Aliquot store at -20℃. Avoid repeated freeze / thaw cycles.
• 存储缓冲液 PBS (pH7.4), 0.1% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
• 亚型 IgG1
• 纯化方式 Protein G affinity purified.
• 其它名称
  • Mertansine antibody
  • DM1 antibody
  • Emtansine antibody

• 应用

  ELISA: 1:5,000-1:20,000

• 

  Fig1: DM1 Antibody (HA601043) in indirect ELISA.
  
  Indirect ELISA analysis of DM1 was performed by coating wells of a 96-well plate with 50 µl per well of DM1 antigen diluted in carbonate/bicarbonate buffer, at a concentration of 1 µg/mL overnight at 4℃. Wells of the plate were washed, blocked with StartingBlock blocking buffer, and incubated with 50 µl per well of a mouse DM1 monoclonal antibody starting at a concentration of 20 µg/mL and serially diluting it to a concentration of 1.28 ng/mL for 2 hours at room temperature. The plate was washed and incubated with 50 µl per well of an HRP-conjugated goat anti-mouse IgG secondary antibody at a dilution of 1:10,000 for one hour at room temperature. Detection was performed using an Ultra TMB Substrate for 5 minutes at room temperature in the dark. The reaction was stopped with sulfuric acid and absorbances were read on a spectrophotometer at 450 nm.

• 背景文献

• 1. Teicher BA, Doroshow JH (November 2012). "The promise of antibody-drug conjugates". N. Engl. J. Med. 367 (19): 1847–8. doi:10.1056/NEJMe1211736. PMID 23134386.
  
  2. Verma S, Miles D, Gianni L, et al. (November 2012). "Trastuzumab emtansine for HER2-positive advanced breast cancer". N. Engl. J. Med. 367 (19): 1783–91. doi:10.1056/NEJMoa1209124. PMC 5125250. PMID 23020162.

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Specific Protocols

To our knowledge, customised protocols are not required for this product. Please try the standard protocols listed below and let us know how you get on.