Natalizumab 是重组人源化单克隆抗体，与 α4β1-整联蛋白结合并阻断其与血管细胞粘附分子 1 的相互作用。它也可阻止淋巴细胞进入中枢神经系统，从而防止急性脱髓鞘复发，可用于复发缓解型多发性硬化症和克罗恩氏病的研究。

Natalizumab used for the treatment of relapsing remitting multiple sclerosis and Crohn's disease.

Natalizumab, a new disease-modifying therapy for relapsing remitting multiple sclerosis (RRMS), is a humanized monoclonal antibody which binds to alpha(4)beta(1)-integrin.As a result, leukocyte migration into brain tissue is inhibited, reducing inflammation and preventing the formation of lesions. Natalizumab may also inhibit ongoing central nervous system (CNS) inflammation, mediated by leukocytes already present in the CNS, by interrupting the interactions between α4-integrin-expressing leukocytes and extracellular matrix proteins such as fibronectin and osteopontin[1].

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