A Phase I safety & immunogenicity study of an HPV16-specific therapeutic protein, TA-CIN, administered intratumorally with chemoradiation in patients with cervical cancer stratified by HPV16 infection
A Phase I safety & immunogenicity study of an HPV16-specific therapeutic protein, TA-CIN, administered intratumorally with chemoradiation in patients with cervical cancer stratified by HPV16 infection
批准号:
10480798
负责人:
TZYY-CHOOU WU
金额:
$36.28万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2003
资助国家:
美国
项目状态:
已结题
起止时间:
2003-09-30 至 2024-08-31
关键词:
AffectAntigen PresentationAntigen-Presenting CellsAntigensApoptoticBedsCD8-Positive T-LymphocytesCancer PatientCarcinomaCell DeathChimeric ProteinsCisplatinClinicalClinical TrialsComplementDataDendritic CellsDiseaseDistalFormulationFundingGoalsHuman Papilloma Virus-Related Malignant NeoplasmHuman PapillomavirusHuman papilloma virus infectionHuman papillomavirus 16Immune responseImmunityImmunotherapeutic agentImmunotherapyInfectionInjectionsIntramuscularLeadLesionMalignant neoplasm of cervix uteriMediatingModelingPatient-Focused OutcomesPatientsPeptidesPharmaceutical PreparationsPhasePhenotypePopulationPre-Clinical ModelProteinsRadiation therapySafetySecondary PreventionSiteStromal CellsSumT-LymphocyteTherapeuticToxic effectTumor AntigensTumor-infiltrating immune cellsVaccinatedVaccinationVaccine TherapyVaccinesVial deviceViral Load resultadaptive immune responseanti-PD1 antibodiesantitumor effectcell mediated immune responsecervical cancer preventioncervicovaginalchemoradiationchemotherapyimmune checkpoint blockadeimmunogenicityimprovedimproved outcomeinnovationmouse modelneoplastic cellnovelpembrolizumabphase I trialpreclinical studyprogrammed cell death ligand 1programmed cell death protein 1standard carestandard of caresuccesstherapeutic HPV vaccinetherapeutic proteintranslational potentialtreatment responsetreatment strategytumortumor microenvironmentuptakevaccine trial
中文摘要
项目概要/摘要:目前IIB-IIIVA期宫颈癌的标准全过程护理包括:
化疗药物顺铂与局部放疗联合使用。然而,在大多数情况下,
IIB-Ⅲ IVA期宫颈癌患者约占30%,这表明需要额外的治疗策略(例如,
免疫疗法),以改善患者的结果。我们最近发现,顺铂或
放射治疗诱导树突状细胞在肿瘤部位短暂聚集,这创造了一个治疗机会窗口
其中瘤内(i.t.) 蛋白质/肽抗原施用可有效地引发和扩大局部肿瘤
抗原特异性CD 8 + T细胞,导致协同治疗性抗肿瘤作用。此外,这种组合
治疗导致肿瘤的免疫抑制基质细胞呈递抗原肽,
因此使其对抗原特异性CD 8 + T细胞介导的杀伤敏感。 总之,这导致了强有力的
抗原特异性CD 8 + T细胞免疫应答和抗肿瘤作用。 TA-CIN是一种串联融合蛋白,
由HPV 16 L2-HPV 7-HPV 6组成,并作为可过滤的聚集体给药,以促进抗原结合蛋白的摄取。
呈递细胞因为宫颈癌可以注射,同时放化疗是治疗的有效方法。
对于IIB-18 IVA期宫颈癌的标准治疗,我们将为IIB-18 IVA期宫颈癌患者接种TA-B1疫苗,
CIN i.t. 在他们的放化疗过程中。 多项临床试验表明TA-β-CIN具有出色的安全性
profile. 随着最近批准一种抗PD-L1抗体Pembrolizumab治疗晚期宫颈癌,
我们将评估信息技术。 TA-CIN疫苗接种与伴随的免疫检查点阻断治疗,以实现
一种新的自发性宫颈阴道癌临床前的免疫和治疗反应增强
模型 本研究的具体目的是(1)评价TA-CIN i.t. 期间的施用
IIB期-IIIVA期HPV 16(+)或HPV 16(-)宫颈癌患者的放化疗; HPV 16(2)表征
IIB-IVA期宫颈癌E6/E7-E10特异性T细胞介导和L2-E10特异性体液免疫应答的研究
患者i.t. (3)确定浸润肿瘤的免疫细胞亚群
在HPV 16-HPV相关的IIB-HPV IVA期患者中,PD-101和PD-10 L1的局部表达以及凋亡性肿瘤细胞死亡
接受i.t.的子宫颈癌患者 TA-CIN疫苗接种;以及(4)表征HPV 16(+)抗原特异性
CD 8 + T细胞介导的HPV 16 E6/E7-T细胞介导的免疫应答和治疗性抗肿瘤作用
表达用i.t. 有或无检查点的TA-宫颈癌疫苗接种
封闭治疗 总之,该提议利用了诱导的时间上容许的肿瘤微环境。
通过化放疗和临床可获得的可用于增强HPV-A特异性免疫的临床可获得性TA-CIN,
在IIB-IVVA期宫颈癌患者中的抗肿瘤作用。 这可能会导致一种安全的新免疫疗法,
补充放化疗,这不仅有利于宫颈癌患者,但也可能有效地对抗
其他HPV相关恶性肿瘤。
英文摘要
Project Summary/Abstract: The current standard-of-care for stage IIB-IVA cervical cancer includes the
chemotherapeutic drug, cisplatin, in conjunction with local radiotherapy. However, the five-year survival in most
stage IIB-IVA cervical cancer patients is ~30%, suggesting that an additional treatment strategy (e.g.
immunotherapy) is needed to improve patient outcomes. We recently found that chemotherapy with cisplatin or
radiotherapy induce a transient accumulation of dendritic cells in tumor loci that creates a window-of-opportunity
wherein intratumoral (i.t.) protein/peptide antigen administration can effectively prime and expand local tumor
antigen-specific CD8+ T cells, leading to synergistic therapeutic antitumor effects. Furthermore, this combination
treatment leads to the presentation of antigenic peptide by immunosuppressive stromal cells of the tumor, which
are thus rendered susceptible to antigen-specific CD8+ T cell-mediated killing. Together, this results in potent
antigen-specific CD8+ T cell immune responses and antitumor effects. TA-CIN is a tandem fusion protein
composed of HPV16 L2-E7-E6 and is administered as a filterable aggregrate to promote uptake by antigen-
presenting cells. Because cervical cancer is accessible to injection and concurrent chemoradiation serves as the
standard care for stage IIB-IVA cervical cancer, we will vaccinate stage IIB-IVA cervical cancer patients with TA-
CIN i.t. during their chemoradiotherapy. Several clinical trials indicate that TA-CIN has an outstanding safety
profile. With the recent approval of an anti-PD-1 antibody, Pembrolizumab, to treat advanced cervical cancer,
we will evaluate i.t. TA-CIN vaccination with concomitant immune checkpoint blockade therapy to achieve
enhanced immune and therapeutic responses in a novel spontaneous cervicovaginal carcinoma preclinical
model. The Specific Aims of this study are to (1) evaluate the safety of TA-CIN i.t. administration during
chemoradiation in patients with stage IIB-IVA HPV16(+) or HPV16(–) cervical cancer;; (2) characterize HPV16
E6/E7-specific T cell-mediated and L2-specific humoral immune responses in stage IIB-IVA cervical cancer
patients i.t. vaccinated with TA-CIN;; (3) determine the subset population of immune cells infiltrating the tumor
bed, local expression of PD-1 and PD-L1, and apoptotic tumor cell death in HPV16-associated stage IIB-IVA
cervical cancer patients receiving i.t. TA-CIN vaccination;; and (4) characterize the HPV16(+) antigen-specific
CD8+ T cell-mediated immune responses and therapeutic antitumor effects in a spontaneous HPV16 E6/E7-
expressing cervicovaginal carcinoma model treated with i.t. TA-CIN vaccination with or without checkpoint
blockade treatment. In sum, this proposal exploits the temporally-permissive tumor microenvironment induced
by chemoradiation and the availability of clinical-grade TA-CIN to potentially enhance HPV-specific immunity and
antitumor effects in stage IIB-IVA cervical cancer patients. This may lead to a safe new immunotherapy to
complement chemoradiation, which not only benefits cervical cancer patients, but may also be effective against
other HPV-associated malignancies.
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会议论文
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