CD81 通过阻断 CD274/PD-L1 的选择性自噬降解驱动放射抵抗性胶质母细胞瘤的免疫逃逸
CD81 drives immune evasion in radioresistant glioblastoma by blocking selective autophagic degradation of CD274/PD-L1.
我们的工作确立了CD81作为连接放射抵抗与免疫逃逸的关键桥梁,其通过维持GBM中CD274的丰度发挥作用,并突显CD81作为优化放射免疫治疗的有前景的治疗靶点。
英文原题:Novel Gamma-Delta (γδ)T Cell Therapy for Treatment of Patients With Newly Diagnosed Glioblastoma
这是一项 I 期注册临床试验,评估细胞治疗用于脑肿瘤的安全性、可行性及初步疗效。当前状态:进行中(不再招募)。计划入组 22 例。试验地点:美国 · 伯明翰(共 1 个中心)。登记号:NCT04165941。
不限性别 · ≥ 18 Years · 接受健康志愿者
纳入标准: • MRI表现符合并疑似恶性胶质瘤(A部分:组织取样/活检及置入Rickham导管);输注DRI γδ T细胞前须组织学或细胞学确诊GBM(B部分:筛选和研究治疗)。 • 已完成A部分规定的标准替莫唑胺及放疗,并符合NCCN新诊断GBM维持期替莫唑胺治疗要求。年龄≥18岁;Karnofsky评分≥70%;预期生存期>12周。 • 器官及骨髓功能:白细胞>3,000/μL;ANC>1,500/μL;血红蛋白≥9.0 g/dL;血小板>100,000/μL;总胆红素在机构正常范围;AST/ALT<机构ULN的2.5倍;钠、钙、钾、氯、镁等电解质正常;INR/PT/aPTT≤ULN的1.5倍;心电图正常,异常时判定为无临床意义;血压符合年龄标准。肌酐在机构正常范围;若高于正常范围,计算肌酐清除率须≥50 mL/min/1.73m²(如Cockcroft-Gault法),通常使用实际体重,BMI>30 kg/m²时用瘦体重计算。 排除标准: • A部分入组前已接受GBM治疗,或接受本研究A部分所述标准治疗以外的治疗:入组前6周内接受细胞免疫/基因治疗、入组前4周内手术切除或烷化剂化疗、既往任何时间接受实验性免疫治疗;或4周前治疗所致不良事件尚未恢复。当前接受其他研究药物。 • 手术时存在颅内通路装置(Rickham导管)置入禁忌;既往脑炎、多发性硬化或其他中枢神经系统感染。计划输注DRI γδ T细胞前2周内需增加激素剂量。 • 未控制并发疾病,包括活动性感染、有症状心衰、不稳定型心绞痛、心律失常或任何妨碍手术的其他疾病;可能影响依从性的精神疾病/社会状况。 • 对氨基双膦酸盐(如唑来膦酸、帕米膦酸等)过敏/超敏。 • 妊娠或哺乳。由于慢病毒修饰、旨在表达MGMT的γδ T细胞对胎儿风险未知,妊娠者排除;母亲接受治疗时须停止哺乳。有生育能力女性须同时采用以下任意两种避孕方法:屏障避孕(男性/女性避孕套,可配合杀精剂,或含杀精剂隔膜/宫颈帽)、宫内节育器或激素避孕;部分抗逆转录病毒药物可能降低激素避孕效果。 • HIV血清阳性者排除(免疫缺陷可能影响预期免疫应答);既往器官或骨髓移植者排除。
Inclusion Criteria:
* Must have magnetic resonance imaging (MRI) features consistent with and suspicious for malignant glioma. This will be Part A - Tissue (biopsy) and Rickham catheter placement.
* Must have histologically or cytologically confirmed glioblastoma multiforme prior to administration of the DRI γδ T cell injection. This will be Part B - Screening and Study Treatment.
* Prior therapy: Must have completed a standard temozolomide and radiotherapy treatment as described in Part A and be eligible to receive maintenance therapy with temozolomide (consistent with NCCN guidelines for newly diagnosed GBM and maintenance therapy).
* Age ≥18 yearsΦ: Because no dosing or adverse event data are currently available on the use of γδ T cells in patients \<18 years of age, children are excluded from this study but will be eligible for future pediatric Phase I single-agent trials.
* Karnofsky Performance Status ≥70%
* Life expectancy of greater than 12 weeks
* Patients must have organ and marrow function as defined below:
1. leukocytes \>3,000/µl
2. absolute neutrophil count \>1,500/µl
3. Hgb greater than or equal to 9.0 g/dL
4. platelets \>100,000/µl
5. total bilirubin within normal institutional limits
6. AST (SGOT)/ALT (SGPT) \<2.5 X institutional upper limit of normal
7. Normal electrolyte levels including sodium, calcium, potassium, chloride and magnesium
8. INR/PT/aPTT ≤1.5xULN
9. Normal EKG; if abnormal, NCS
10. Normal blood presure as adjusted for age
* Creatinine within normal institutional limits or if higher than the normal range, calculated creatinine clearance (CrCl) must be ≥ 50 mL/min/1.73 m2 (e.g., by Cockcroft-Gault formula); actual body weight must be used for CrCl unless body mass index (BMI) is \> 30 kg/m2, in which case, lean body weight must be used
Exclusion Criteria:
* Patients who have received any therapy for the treatment of GBM prior to inclusion in Part A and any treatment other than standard of care as described in Part A of this study including: cellular immunotherapy or gene therapy within 6 weeks prior to entering the study, surgical resection or alkylating agent chemotherapy within 4 weeks prior to entering the study, or have received experimental immunotherapy at any time, and those who have not recovered from adverse events due to therapeutic interventions administered more than 4 weeks earlier.
* Patients may not be receiving any other investigational agents.
* Contraindication to the placement of an intracranial access device (Rickham catheter) at the time of surgery.
* Prior history of encephalitis, multiple sclerosis, or other CNS infection
* Required steroid increase within 2 weeks of scheduled DRI γδ T cells administration.
* Uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or any othermedical condition that precludes surgery. Also, psychiatric illness/social situations that would limit compliance with study requirements.
* Allergies/hypersensitivity: Aminobisphosphonates such as Zoledronate®, Pamidronate® or similar
* Pregnant women are excluded from this study because the lentiviral- modified γδ T cells designed to express MGMT cells have an unknown potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with these cells, breastfeeding should be discontinued if the mother is treated with the lentiviral-modified γδ T cells designed to express MGMT. The following birth control methods are acceptable for this study in women of child- bearing potential:
* A Combination of TWO of the following:
1. Barrier method of contraception:
1. condoms (male or female) with or without a spermicidal agent, diaphragm or cervical cap with spermicide
2. IUD
2. Hormone-based Contraceptive
* Note: Drug-drug interactions with some ARVs will make hormonal contraception a less reliable method.
* Because patients with immune deficiency will be unable to mount the anticipated immune response underlying this therapeutic rationale, HIV-seropositive patients are excluded from this study.
* Some of the contraceptive methods listed above may not prevent the spread of HIV to other people. Patients should discuss their contraceptive choices with their health care provider to choose the best way to both prevent pregnancy as required by this study and to prevent the spread of HIV to any partner(s).
* Patients with history of prior organ or bone marrow transplantation are not eligible.以上为辅助阅读译文。是否适合入组须由主治医生判断,最终以登记平台与研究者确认为准。
主要终点:Primary: Highest safe dose frequency or maximally planned dose, if no dose-limiting toxicity observed. · Safety and toxicity of intracranially infused DRI gamma delta T cells · 12 weeks
次要终点:Time to progression;Overall survival;Assessment of biological activity
患者接受放疗及同步替莫唑胺标准治疗后,输注DRI基因修饰γδ T细胞。
本研究评估实验性细胞疗法联合替莫唑胺治疗新诊断胶质母细胞瘤(GBM)的安全性和耐受性。
This study is being conducted to find out if the safety and tolerability of an experimental cell therapy is safe to administer to patients with a newly diagnosed glioblastoma multiforme (GBM) in combination with temozolomide (TMZ).
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