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      正大天晴ADC管線三箭齊發(fā),1類創(chuàng)新藥TQB2101進軍ROR1新賽道

      2025-03-22 分享

      TQB2101是正大天晴自主研發(fā)的一款靶向受體酪氨酸激酶樣孤兒受體1(ROR1)的抗體偶聯(lián)藥物(ADC)。近日,TQB2101首次獲得國家藥品監(jiān)督管理局(NMPA)的臨床試驗?zāi)驹S可,擬用于治療晚期惡性腫瘤,是正大天晴繼HER2 ADC、CLDN18.2 ADC之后,在ADC藥物領(lǐng)域取得的又一里程碑。



      近年來,ROR1因其獨特的表達模式及其在腫瘤生物學(xué)中的關(guān)鍵作用, 成為腫瘤治療研究的熱點。正常情況下,ROR1低表達于正常成人組織,而高表達于多種惡性腫瘤,如慢性淋巴細(xì)胞白血病(CLL)、急性淋巴細(xì)胞白血?。ˋLL)、乳腺癌、卵巢癌、黑色素瘤、肺腺癌等[1-9]。大量數(shù)據(jù)顯示,ROR1在促進腫瘤的生長和轉(zhuǎn)移、誘導(dǎo)腫瘤細(xì)胞耐藥和抑制細(xì)胞凋亡等方面起到了不可忽視的作用[7-12]


      臨床前研究數(shù)據(jù)顯示,TQB2101在多種ROR1陽性腫瘤模型中展現(xiàn)出抗腫瘤活性,且具有良好的安全性特征。此次獲批的I期臨床試驗將重點評估其在人體內(nèi)的安全性、耐受性、藥代動力學(xué)特性及初步療效。


      TQB2101獲批臨床標(biāo)志著正大天晴在ADC賽道,形成了HER2雙抗ADC、CLDN18.2 ADC之后的第三極創(chuàng)新矩陣。目前,企業(yè)已構(gòu)建涵蓋大分子、小分子及ADC的自研體系,為后續(xù)ADC藥物的開發(fā)提供有力支持。


      參考文獻:

      [1] BRAY F, LAVERSANNE M, SUNG H, et al. Global cancer statistics 2022: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries [J]. CA Cancer J Clin, 2024, 74(3): 229-63.

      [2] MARIA JOSEFINA Q, PABLO L B. The signaling pathways activated by RORl in cancer [J]. Cell Signal, 2023, 104:110588.

      [3] CETIN M, ODABAS G, DOUGLAS L R, et al. RORl Expression and its functional signifcance in hepatocellular carcinoma cells [J]. Cells, 2019,8(3): 210.

      [4] SIVAGANESH V, PEETHAMBARAN B. Receptor tyrosine kinase-like orphan receptor 1 inhibitor strictinin exhibits anti-cancer properties against highly aggressive androgen-independent prostate cancer[J]. Explor Target Antitumor Ther, 20234(6):1188-209.

      [5] FULTANG N, ILLENDULA A, LIN J, et al. RORl regulates chemoresistance in breast cancer via modulation of drug eflux pump ABCB1 [J]. Sci Rep, 2020, 10(1): 1821.

      [6] BORCHERDING N, KUSNER D, LIU G H, et al. ROR1, an embryonic protein with an emerging role in cancer biology [J].Protein Cell, 2014, 5(7):496-502.

      [7] YODA A, OISHI I, MINAMI Y. Expression and function of the Ror family receptors tyrosine kinases during development: lessons from genetic analyses of nematodes, mice, and humans [J].J Recept Signal Transduct Res, 2003, 23(1): 1-15.

      [8] KAMIZAKI K, MINAMI Y, NISHITA M. Role of the Ror family receptors in Wnt5a signaling [J]. In Vitro Cell Dev Biol Anim, 2024.60(5):489-501.

      [9] SATO A, YAMAMOTO H, SAKANE H, et al. Wnt5a regulates distinct signalling pathways by binding to Frizzled2 [J].EMBO J, 2010,29(1): 41-54.

      [10] YAMAZAKI M, HINO S, USUKI S, et al. YAP/BRD4-controlled RORl promotes tumor-initiating cells and hyperproliferation in pancreatic cancer [J]. EMBO J, 2023, 42(14): e112614.

      [11] BROOME H E, RASSENTI L Z, WANG H Y, et al. RORl is expressed on hematogones (non-neoplastic human B-lymphocyte precursors) and a minority of precursor-B acute lymphoblastic leukemia [J]. Leuk Res, 2011,35(10):1390-4.

      [12] MASIAKOWSKIP, CARROLL R D. A novel family of cell surface receptors with tyrosine kinase-like domain [J]. J Biol Chem, 1992.267(36):26181-90.

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