KENDRA CARMON博士,博士。

KENDRA CARMON博士,博士。

助理教授,翻译癌症研究中心beplay苹果手机能用吗

电子邮件地址:kendra.s.carman@ut.tmc.edu.
电话号码:713-500-3390.
房间号:SRB 530H.

叙述

发展Antibody-Drug Conjugates for Targeting Cancer Stem Cells

出现的证据表明,在几种不同的恶性肿瘤内,存在的癌细胞亚群,表现得像正常干细胞。这些癌症状细胞(CSCs)或肿瘤引发细胞可以更新并维持癌症,如正常干细胞重新押出并维持我们的器官和组织。CSCs可以推动肿瘤生长,转移和抗癌疗法的抵抗力。由于CSCs通常不被常规治疗完全消除,因此它们可以再生肿瘤并潜在转移,导致患者生活质量和生存率下降。因此,必须开发一种最终靶向和破坏CSC的新一代新疗法。

LGR5(富含亮氨酸重复的G蛋白偶联受体5)受体是肠道中正常成体干细胞的真绒标记物和多个其他上皮组织。作为青云(JIM)博士的博士生实习生,刘的实验室我发现LGR5作为分泌的生长因子R-掺杂的受体,以增强WNT信号传导,其干细胞生存和肿瘤发生的关键调节途径。从那时起,许多报道表明,在包括结肠,肝,胃和卵巢癌中,LGR5表达明显升高。最近的证据进一步证明了具有高水平LGR5的人癌细胞表现得像CSC,促进肿瘤生长,转移和耐药性。这些研究结果表明LGR5的潜力作为基于CSC的疗法发展的有希望的新目标。

My research is focused on the development of innovative anti-LGR5 antibody-drug conjugates (ADCs) that will “seek and destroy” LGR5-expressing tumors and CSCs, similar to guided missiles. These ADCs will incorporate a chemical toxin that is only released once it enters target cells with high levels of LGR5. My previous work has shown that LGR5 is continuously and rapidly internalized into the cell, making it an exceptional transit for fast and specific delivery of ADCs into CSCs. A series of anti-LGR5 ADCs are being generated using functionally different antibodies and distinct chemical linkers to incorporate the toxins. Using cutting-edge techniques, we are testing the ability of the ADCs to precisely bind and destroy LGR5-positive cancer cells and evaluating their anti-tumor effects in xenograft tumor mouse models. Additionally, we are further investigating the signaling mechanism(s) of LGR5 and its role in cancer and chemoresistance. This research will provide preclinical proof-of-concept for the feasibility of the future development of anti-LGR5 ADCs. A CSC-targeted ADC could be a breakthrough treatment to eradicate residual tumors and metastasis, and more importantly, prolong overall quality of life and survival for a large number of cancer patients.

beplay苹果手机能用吗研究项目

  • 抗LGR5抗体 - 药物缀合物的发展
  • Investigation of LGR5 signaling and its role in cancer and drug resistance

关键出版物

Gong,X.,Azhdarinia,A.,Ghosh,S.C.,Xiong,W.,An,Z.,Liu,Q.和Carmon,K.S. *(2016)Lgr5靶向抗体 - 药物缀合物根除胃肠道肿瘤并防止复发,mol。癌症。15(7):1580-90。

Carmon K.S.,Gong X.,Yi J.,Thomas A.,Liu Q.(2014)RSPO-LGR4通过IQGAP1函数来增强WNT信令。Proc Natl Acad SCI U S A. 111(13):E1221-9。

Carmon,K.S. *,Lin,Q.,Gong,X.,Thomas,A. Liu,Q *。(2012)LGR5与WNT受体相互作用并共同内化以调节WNT /β-连环蛋白信号传导。Mol细胞Biol。32(11):2054-2064。(*通讯作者)

Carmon,K.S.,Zong,X.,林,Q.,托马斯,A.刘,Q.(2011)R-Spondins用作孤儿受体LGR4和LGR5的配体,以调节Wnt /β-连环蛋白信号传导。Proc Natl Acad Sci USA。108(28):11452-7。

Carmon,K.S.和松散,D.S.(2010)用于检测单个毛毡受体的Wnt结合亲和力的生物测定。肛门Biochem。401(2):288-94。

Carmon, K.S., and Loose, D.S. (2008) SFRP4 Regulates Two Wnt7a Signaling Pathways and Inhibits Proliferation in Endometrial Cancer Cells. Mol Cancer Res. 6 (6): 1017-1028.

Lovo结肠癌细胞

抗LGR5-ADC具有高度特异性的,并在结肠癌细胞的细胞表面中与LGR5受体形成复合物。然后将LGR5-ADC复合物(红色)内化并运输到溶酶体室(灯1,绿色),其中药物可以释放以破坏癌细胞(共同定位,黄色)。

lovo. LOVO-W / O LGR5

抗LGR5-ADC治疗显着降低结肠癌细胞存活(左),并且在操纵以不再表达LGR5(右)的细胞中没有效果。未缀合的抗LGR5抗体对细胞存活没有影响。