Role of Heat Shock Protein 70 as a Mediator and Therapeutic Target in T-cell Lymphomas

热休克蛋白 70 作为 T 细胞淋巴瘤介质和治疗靶点的作用

基本信息

批准号：
10669221
负责人：
Javeed Iqbal
金额：
$ 47.42万
依托单位：
UNIVERSITY OF TX MD ANDERSON CAN CTR
依托单位国家：
美国
项目类别：
财政年份：
2022
资助国家：
美国
起止时间：
2022-07-20 至 2027-06-30
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10669221
关键词：
Address Adoptive Cell Transfers African African ancestry Amanitins Antibodies Antibody-drug conjugates Area Asian B-Cell Lymphomas B-Cell NonHodgkins Lymphoma B-Lymphocytes Binding Biological Assay Blood CAR T cell therapy Cancerous Cell Line Cell model Cell surface Cells Cellular biology Classification Clinic Clinical Codon Nucleotides Country Cutaneous Cutaneous T-cell lymphoma Data Deacetylase Development Diagnosis Disease Dose Doxorubicin Drug Approval Effectiveness Exclusion Gene Expression Gene Expression Profiling Genetic Genomic approach Genomics Goals Growth Heat-Shock Proteins 70 Hematologic Neoplasms Heterogeneity Human Immunophenotyping In Vitro Incidence Industry Interferons Janus kinase Ki-1 Large-Cell Lymphoma Link Lymphoma Malignant Neoplasms Mediator Medical Membrane Messenger RNA Modeling Molecular Molecular Profiling Monoclonal Antibodies Morphology Mus Mycosis Fungoides Non-Hodgkin&apos s Lymphoma Normal Cell Normal tissue morphology Nuclear Oncogenes Oncogenic Outcome Pathway interactions Patient-Focused Outcomes Patients Pattern Peripheral Pharmaceutical Preparations Physiological Population Prognosis Protein Overexpression Proteome Proteomics Regimen Relapse Research Role STAT protein Sampling Schedule Sezary Syndrome Signal Transduction Skin Subgroup System T cell therapy T-Cell Lymphoma T-Cell and NK-Cell Neoplasm T-Lymphocyte TNFRSF8 gene Testing Therapeutic Therapeutic Monoclonal Antibodies Thymus Gland United States Variant Vorinostat Work Xenograft procedure anaplastic lymphoma kinase beta-Chemokines biomarker driven cancer cell chemokine receptor chimeric antigen receptor chimeric antigen receptor T cells cytotoxicity differential expression efficacy evaluation efficacy validation experimental study improved improved outcome in vitro Model in vitro activity in vivo in vivo Model inhibitor kinase inhibitor lymph nodes neoplastic new therapeutic target non-Hodgkin&apos s lymphoma patients novel novel therapeutics patient derived xenograft model peripheral blood rational design statistics synergism therapeutic target transgene expression translational approach tumor vector

Address Adoptive Cell Transfers African African ancestry Amanitins Antibodies Antibody-drug conjugates Area Asian B-Cell Lymphomas B-Cell NonHodgkins Lymphoma B-Lymphocytes Binding Biological Assay Blood CAR T cell therapy Cancerous Cell Line Cell model Cell surface Cells Cellular biology Classification Clinic Clinical Codon Nucleotides Country Cutaneous Cutaneous T-cell lymphoma Data Deacetylase Development Diagnosis Disease Dose Doxorubicin Drug Approval Effectiveness Exclusion Gene Expression Gene Expression Profiling Genetic Genomic approach Genomics Goals Growth Heat-Shock Proteins 70 Hematologic Neoplasms Heterogeneity Human Immunophenotyping In Vitro Incidence Industry Interferons Janus kinase Ki-1 Large-Cell Lymphoma Link Lymphoma Malignant Neoplasms Mediator Medical Membrane Messenger RNA Modeling Molecular Molecular Profiling Monoclonal Antibodies Morphology Mus Mycosis Fungoides Non-Hodgkin&apos s Lymphoma Normal Cell Normal tissue morphology Nuclear Oncogenes Oncogenic Outcome Pathway interactions Patient-Focused Outcomes Patients Pattern Peripheral Pharmaceutical Preparations Physiological Population Prognosis Protein Overexpression Proteome Proteomics Regimen Relapse Research Role STAT protein Sampling Schedule Sezary Syndrome Signal Transduction Skin Subgroup System T cell therapy T-Cell Lymphoma T-Cell and NK-Cell Neoplasm T-Lymphocyte TNFRSF8 gene Testing Therapeutic Therapeutic Monoclonal Antibodies Thymus Gland United States Variant Vorinostat Work Xenograft procedure anaplastic lymphoma kinase beta-Chemokines biomarker driven cancer cell chemokine receptor chimeric antigen receptor chimeric antigen receptor T cells cytotoxicity differential expression efficacy evaluation efficacy validation experimental study improved improved outcome in vitro Model in vitro activity in vivo in vivo Model inhibitor kinase inhibitor lymph nodes neoplastic new therapeutic target non-Hodgkin&apos s lymphoma patients novel novel therapeutics patient derived xenograft model peripheral blood rational design statistics synergism therapeutic target transgene expression translational approach tumor vector

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项目摘要

PROJECT SUMMARY / ABSTRACT Non-Hodgkin lymphoma (NHL) is the most frequent hematologic malignancy, and is divided into B-cell and T- cell lymphoma subtypes. B-cell NHL patient outcomes have improved dramatically with the development of new targeted therapies, but similar progress has not been made against peripheral T-cell (PTCL) and cutaneous T-cell (CTCL) lymphomas. Indeed, patients who relapse after initial PTCL therapy have a less than 1 year median survival, and patients with the CTCL subtype mycosis fungoides that is advanced, or that has Sézary syndrome with skin, blood, and lymph node disease, have a median survival of one year from diagnosis. Thus, the identification of novel targets and drugs with activity against PTCL and CTCL will be critical for this area of unmet medical need to help cure these diseases, which have not been a major focus for industry-sponsored research due to their heterogeneity and lower incidence. To address this challenge, we investigated the cell surface proteome of PTCL and CTCL cell lines and found Heat shock protein 70 (HSP70) to be highly expressed. Then, we developed monoclonal antibodies to human HSP70 and found that one, designated clone 239-87, recognized HSP70 on PTCL and CTCL cells but not on normal T-cells. To convert 239-87 into a drug, we linked it to monomethyl auristatin E (MMAE) to generate an antibody-drug conjugate (ADC), which we found inhibited PTCL and CTCL cell line growth as well as and, in some cases, better than brentuximab vedotin (BV), another ADC already approved for T-cell NHL. Also, 239-87-MMAE showed synergy when combined with other therapies already used against PTCL and CTCL, including the deacetylase inhibitor vorinostat and the ADC BV. Next, we used the 239-87 single chain variable fragment sequence to create chimeric antigen receptor (CAR) guided T-cells, and these were activated in the presence of T-cell NHL cell lines. Finally, in a cell line-based xenograft, the 239-87-MMAE ADC cured mice with an aggressive PTCL variant. Our preliminary data support the central hypothesis that targeting cell surface HSP70 using an ADC or CAR T-cell therapy approach will be both novel and effective against PTCL and CTCL, and could ultimately improve patient outcomes. In order to test this hypothesis, we propose three aims: (1) To investigate the differential expression of HSP70 in PTCL and CTCL models, including in primary patient samples, and to perform studies to identify pathways in these cancer cells that regulate HSP70 expression; (2) To identify the best ADC and CAR T-cell construct based on our 239-87 antibody, and explore which combinations will show greatest synergy; and (3) To use in vivo models, including patient-derived xenografts, to determine effective strategies against these lymphomas that will work best in the clinic. Taken together, successful completion of these studies will increase our understanding of the role of HSP70 in PTCL and CTCL biology, provide the rationale to take these approaches to the clinic for patients with PTCL and CTCL who are looking for novel therapies and, ultimately, improve their outcomes.

项目摘要 /摘要非霍奇金淋巴瘤（NHL）是最常见的血液系统恶性肿瘤，分为B细胞和T- 细胞淋巴瘤亚型。 B细胞NHL患者的结果随着发展新的靶向疗法，但尚未针对周围T细胞（PTCL）和皮肤T细胞（CTCL）淋巴瘤。实际上，初次PTCL治疗后继电器的患者的患者少于 1年的中位生存期和患有CTCL亚型真菌病真菌病的患者已先进，或者具有 Sézary综合征与皮肤，血液和淋巴结疾病，中位生存期为一年诊断。那就鉴定具有针对PTCL和CTCL活性的新型靶标和药物将是对于这一未满足的医疗需求至关重要，可以帮助治愈这些疾病，这并不是主要重点由于其异质性和较低的事件，行业赞助的研究。为了应对这一挑战，我们研究了PTCL和CTCL细胞系的细胞表面蛋白，发现热休克蛋白70（HSP70）高度表达。然后，我们开发了对人HSP70的单克隆抗体，发现一种指定的克隆239-87，在PTCL和CTCL细胞上识别HSP70，但在正常T细胞上未识别。转换 239-87纳入药物，我们将其与单甲基Auristatin E（MMAE）联系起来，以生成抗体 - 药物结合物（ADC），我们发现它抑制了PTCL和CTCL细胞系的生长，并且在某些情况下都比 Brentuximab Vedotin（BV），另一位ADC已批准用于T-Cell NHL。另外，显示了239-87-mmae 与已经针对PTCL和CTCL的其他疗法结合使用的协同作用，包括脱乙酰基酶抑制剂伏立诺和ADC BV。接下来，我们使用239-87单链可变片段序列创建嵌合抗原受体（CAR）引导的T细胞，并在T细胞NHL的存在下激活这些抗原受体细胞系。最后，在基于细胞系的异种移植物中，具有侵略性PTCL的239-87-MMAE ADC固化小鼠变体。我们的初步数据支持以ADC或ADC或 CAR T细胞疗法方法将是新颖且对PTCL和CTCL有效的，并且最终可能改善患者的预后。为了检验这一假设，我们提出了三个目的：（1）研究 HSP70在PTCL和CTCL模型中的差异表达，包括主要患者样本中，以及进行研究以鉴定这些调节HSP70表达的癌细胞中的途径；（2）至根据我们的239-87抗体确定最佳的ADC和汽车T细胞结构，并探索哪个组合将显示出最大的协同作用；（3）使用体内模型，包括患者衍生异种移植物，以确定针对这些淋巴瘤的有效策略，这些淋巴瘤在诊所。综上所述，这些研究的成功完成将增加我们对 PTCL和CTCL生物学中的HSP70，为患有患者的患者提供了这些方法的理由 PTCL和CTCL正在寻找新型疗法，并最终改善其结果。