Dergiler / Turkish Journal of Hematology / 2020 / Cilt: 37 - Sayı: 4

Preclinical Assessment of Efficacy and Safety Analysis of CAR-T Cells (ISIKOK-19) Targeting CD19-Expressing B-Cells for the First Turkish Academic Clinical Trial with Relapsed/Refractory ALL and NHL Patients

Relaps/Refrakter ALL ve NHL Hastalarıyla İlk Türk Akademik Klinik Çalışması için CD19- İfade Eden B-Hücrelerini Hedefleyen CAR-T Hücrelerinin (ISIKOK-19) Etkinlik ve Güvenlik Analizinin Klinik Öncesi Değerlendirmesi

Sayfa
234–247
DOI
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In addition, ISIKOK-19 cells demonstrated a significantlyhigh level of cytotoxicity specifically against a CD19+ B-lymphocytecancer model, RAJI cells, in NOD/SCID mice.Conclusion: This is the first report of preclinical assessment ofefficacy and safety analysis of CAR-T cells (ISIKOK-19) targetingCD19-expressing B cells in relapsed/refractory ALL and NHL patientsin Turkey

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Amaç & Hipotez:Objective: Relapsed and refractory CD19-positive B-cell acutelymphoblastic leukemia (ALL) and non-Hodgkin lymphoma (NHL)are the focus of studies on hematological cancers.
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Temel Bulgular & Veri:Treatment ofthese malignancies has undergone recent transformation with thedevelopment of new gene therapy and molecular biology techniques,which are safer and well-tolerated therapeutic approaches.
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Sonuç & Katkı:In addition, ISIKOK-19 cells demonstrated a significantlyhigh level of cytotoxicity specifically against a CD19+ B-lymphocytecancer model, RAJI cells, in NOD/SCID mice.Conclusion: This is the first report of preclinical assessment ofefficacy and safety analysis of CAR-T cells (ISIKOK-19) targetingCD19-expressing B cells in relapsed/refractory ALL and NHL patientsin Turkey
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Özet

Objective: Relapsed and refractory CD19-positive B-cell acutelymphoblastic leukemia (ALL) and non-Hodgkin lymphoma (NHL)are the focus of studies on hematological cancers. Treatment ofthese malignancies has undergone recent transformation with thedevelopment of new gene therapy and molecular biology techniques,which are safer and well-tolerated therapeutic approaches. The CD19antigen is the most studied therapeutic target in these hematologicalcancers. This study reports the results of clinical-grade production,quality control, and in vivo efficacy processes of ISIKOK-19 cells as thefirst academic clinical trial of CAR-T cells targeting CD19-expressing Bcells in relapsed/refractory ALL and NHL patients in Turkey.Materials and Methods: We used a lentiviral vector encoding theCD19 antigen-specific antibody head (FMC63) conjugated with theCD8-CD28-CD3ζ sequence as a chimeric antigen receptor (CAR) alongwith a truncated form of EGFR (EGFRt) on human T-lymphocytes(CAR-T). We preclinically assessed the efficacy and safety of themanufactured CAR-T cells, namely ISIKOK-19, from both healthydonors’ and ALL/NHL patients’ peripheral blood mononuclear cells.Results: We showed significant enhancement of CAR lentivirustransduction efficacy in T-cells using BX-795, an inhibitor of thesignaling molecule TBK1/IKKƐ, in order to cut the cost of CAR-T cellproduction. In addition, ISIKOK-19 cells demonstrated a significantlyhigh level of cytotoxicity specifically against a CD19+ B-lymphocytecancer model, RAJI cells, in NOD/SCID mice.Conclusion: This is the first report of preclinical assessment ofefficacy and safety analysis of CAR-T cells (ISIKOK-19) targetingCD19-expressing B cells in relapsed/refractory ALL and NHL patientsin Turkey

Abstract

Amaç: Relaps/refrakter CD19-pozitif B-hücreli akut lenfoblastik lösemi (ALL) ve Hodgkin dışı lenfoma (NHL), hematolojik kanserlerle ilgili çalışmaların odak noktasıdır. Bu malignitelerin tedavisi, daha güvenilir ve iyi tolere edilen terapötik yaklaşımlar olan, yeni gen terapisi ve moleküler biyoloji tekniklerinin geliştirilmesi ile son zamanlarda dönüşüm geçirmiştir. CD19 antijeni, bu hematolojik kanserlerde en çok çalışılan terapötik hedeftir. Bu çalışma, Türkiye’de relaps/refrakter ALL ve NHL hastalarında, ilk akademik klinik deneme için kullanılması amacıyla, CD19 eksprese eden B hücrelerini hedefleyen CAR-T (ISIKOK-19) hücrelerinin klinik sınıf üretimi, kalite kontrolü ve in vivo etkinlik süreçlerinin sonuçlarını bildirmektedir. Gereç ve Yöntemler: Bu çalışmada, insan T-lenfositleri (CAR-T) üzerinde kesilmiş EGFR (EGFRt) formu ile birlikte kimerik bir antijen reseptörü (CAR) olarak CD8-CD28-CD3ζ sekansı ile konjuge CD19 antijene özgü antikor başını (FMC63) eksprese eden bir lentiviral vektör kullandık. Hem sağlıklı donörlerin hem de ALL/NHL hastalarının periferal kan mononükleer hücrelerinden üretilen CAR-T (ISIKOK-19) hücrelerinin etkinliğini ve güvenliğini klinik öncesi olarak değerlendirdik. Bulgular: CAR-T hücre üretiminin maliyetini düşürmek için sinyal molekülü TBK1/IKKƐ ’nın bir inhibitörü olan BX-795 kullanarak T-hücrelerinde CAR lentivirüs transdüksiyon etkinliğinin önemli ölçüde arttığını gösterdik. Ek olarak, ISIKOK-19 CAR-T hücrelerinin, NOD/SCID farelerinde özellikle bir CD19 + Blenfosit kanser modeli olan RAJI hücrelerine karşı önemli ölçüde ve yüksek seviyede sitotoksisite gösterdiğini değerlendirdik. Sonuç: Bu çalışma, Türkiye’de relaps/refrakter ALL ve NHL hastalarında CD19 eksprese eden B-hücrelerini hedefleyen CAR-T hücrelerinin ilk akademik klinik çalışması olarak ISIKOK-19 hücrelerinin klinik sınıf üretimi, kalite kontrolü ve in vivo etkinlik süreçlerinin sonuçlarını bildirmektedir.

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Bu Makaleye Atıf Yap

TAŞTAN, C., KANÇAĞI, D. D., TURAN, R. D., YURTSEVER, B., ÇAKIRSOY, D., ABANUZ, S., YILANCI, M., SEYİS, U., ÖZER, S., MERT, S., KAYHAN, C. K., TOKAT, F., ELMAS, M. A., BİRDOĞAN, S., ARBAK, S., YALÇIN, K., SEZGİN, A., KIZILKILIÇ, E., HEMŞİNLİOĞLU, C., İNCE, Ü., Siret, S. (2020). Preclinical Assessment of Efficacy and Safety Analysis of CAR-T Cells (ISIKOK-19) Targeting CD19-Expressing B-Cells for the First Turkish Academic Clinical Trial with Relapsed/Refractory ALL and NHL Patients. Turkish Journal of Hematology, Cilt: 37 - Sayı: 4, 234–247. https://ajindex.com/articles/412705

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