Vedolizumab

Specification

• Cat#: THA-0056
• Product Name: Vedolizumab
• Description: Vedolizumab is an integrin blocker and anti-inflammatory agent used to manage ulcerative colitis and Crohn's disease in adults.
• Sequences: Heavy Chain Sequence: QVQLVQSGAEVKKPGASVKVSCKGSGYTFTSYWMHWVRQAPGQRLEWIGEIDPSESNTNYNQKFKGRVTLTVDISASTAYMELSSLRSEDTAVYYCARGGYDGWDYAIDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELAGAPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK Light Chain Sequence: DVVMTQSPLSLPVTPGEPASISCRSSQSLAKSYGNTYLSWYLQKPGQSPQLLIYGISNRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCLQGTHQPYTFGQGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC
• Molecular Weight: 146837.0 Da
• Introduction: Vedolizumab is a recombinant humanized IgG1 monoclonal antibody directed against the human lymphocyte α4β7 integrin, a key mediator of gastrointestinal inflammation implicated in diseases like ulcerative colitis or Crohn's disease. α4β7 integrin facilitates the interaction between lymphocytes and gut endothelial cells through the α4β7 integrin-MAdCAM1 interaction, leading to the mobilization of lymphocytes and thus contributing to gastrointestinal inflammation. Integrins implicated in cell migration into the intestinal tract included α2β2, α4β1, and α4β7; however, the selective activity of vedolizumab against α4β7 integrin has been thought to contribute to its more favorable safety profile compared to its predecessor natalizumab, the first integrin receptor antagonist approved by the FDA. Vedolizumab is administered by IV infusion over a period of 30 minutes; after the first dose, it is given again at two and six weeks and then every 8 weeks thereafter. Vedolizumab was developed by Takeda and approved by the FDA under the brand name ENTYVIO for the maintenance therapy of moderately to severely active Ulcerative Colitis and Crohn' Disease in April and September 2023, respectively.
• Purity: >99% by SDS-Page and HPLC analysis
• Formula: C6528H10072N1732O2042S42
• Appearance: Solid
• Endotoxin Level: < 0.001 EU/μg of the protein by the LAL method

Pharmaceutical Information

• Pharmacodynamics: Non-clinical studies have shown that the pharmacodynamic effects of vedolizumab are reversible upon removal of the antibody: pharmacologic activity of cells inhibited by vedolizumab could be partially restored within 24 hours after removal, with near complete restoration within 4 days. There are no known drug interactions as vedolizumab is a humanized antibody and does not modulate the production of cytokines, which is known to affect drug metabolism. The α4β7 integrin is expressed on the surface of a discrete subset of memory T-lymphocytes that preferentially migrate into the gastrointestinal tract. Mucosal addressin cell adhesion molecule-1 (MAdCAM-1) is mainly expressed on gut endothelial cells and plays a critical role in homing T-lymphocytes to gut lymph tissue. The interaction of the α4β7 integrin with MAdCAM-1 has been implicated as an important contributor to chronic inflammation, a hallmark of ulcerative colitis and Crohn's disease. Inhibition of α4β7 integrin by vedolizumab prevents the adhesion of lymphocytes to its natural ligand, thus decreasing the migration of memory T-lymphocytes across the endothelium into inflamed gastrointestinal parenchymal tissue. In clinical trials with vedolizumab at doses ranging from 0.2 to 10 mg/kg (which includes doses outside of the recommended dose), saturation of α4β7 receptors on subsets of circulating lymphocytes involved in gut-immune surveillance was observed. In clinical trials with vedolizumab at doses ranging from 0.2 to 10 mg/kg and 180 to 750 mg (which include doses outside of the recommended dose) in healthy subjects and in patients with ulcerative colitis or Crohn's disease, vedolizumab did not elevate neutrophils, basophils, eosinophils, B-helper and cytotoxic T-lymphocytes, total memory helper T-lymphocytes, monocytes or natural killer cells. A reduction in gastrointestinal inflammation was observed in rectal biopsy specimens from Phase 2 ulcerative colitis patients exposed to vedolizumab for four or six weeks compared to placebo control as assessed by histopathology. In a study of 14 healthy subjects, vedolizumab did not affect the CD4+ lymphocyte cell counts, CD8+ lymphocyte cell counts, or the CD4+:CD8+ ratios in the CSF.
• Targets: Integrin alpha-4 Integrin beta-7