Aghebati-Maleki Leili, Younesi Vahid, Jadidi-Niaragh Farhad, Baradaran Behzad, Majidi Jafar, Yousefi Mehdi
Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Hum Antibodies. 2017;25(1-2):57-63. doi: 10.3233/HAB-170310.
Receptor tyrosine kinase-like orphan receptor (ROR1) belongs to one of the families of receptor tyrosine kinases (RTKs). RTKs are involved in the various physiologic cellular functions including proliferation, migration, survival, signaling and differentiation. Several RTKs are deregulated in various cancers implying the targeting potential of these molecules in cancer therapy. ROR1 has recently been shown to be expressed in various types of cancer cells but not in normal adult cells. Hence a molecular inhibitor of extracellular domain of ROR1 that inhibits ROR1-cell surface interaction is of great therapeutic importance. In an attempt to develop molecular inhibitors of ROR1, we screened single chain variable fragment (scFv) phage display libraries, Tomlinson I + J, against one specific synthetic oligopeptide from extracellular domain of ROR1 and selected scFvs were characterized using various immunological techniques. Several ROR1 specific scFvs were selected following five rounds of panning procedure. The scFvs showed specific binding to ROR1 using immunological techniques. Our results demonstrate successful isolation and characterization of specific ROR1 scFvs that may have great therapeutic potential in cancer immunotherapy.
受体酪氨酸激酶样孤儿受体(ROR1)属于受体酪氨酸激酶(RTK)家族之一。RTK参与多种生理细胞功能,包括增殖、迁移、存活、信号传导和分化。几种RTK在各种癌症中失调,这意味着这些分子在癌症治疗中具有靶向潜力。最近发现ROR1在各种类型的癌细胞中表达,但在正常成年细胞中不表达。因此,一种抑制ROR1与细胞表面相互作用的ROR1细胞外结构域分子抑制剂具有重要的治疗意义。为了开发ROR1的分子抑制剂,我们针对ROR1细胞外结构域的一种特定合成寡肽筛选了单链可变片段(scFv)噬菌体展示文库Tomlinson I + J,并使用各种免疫学技术对筛选出的scFv进行了表征。经过五轮淘选程序,筛选出了几种ROR1特异性scFv。这些scFv使用免疫学技术显示出与ROR1的特异性结合。我们的结果表明成功分离并表征了特异性ROR1 scFv,它们在癌症免疫治疗中可能具有巨大的治疗潜力。