Immunization of NSCLC Patients with Antigen-pulsed Immature Autologous Dendritic Cells
Overview
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Only a handful of NSCLC patients have been included in dendritic cell (DC) vaccine clinical trials. We had previously reported a series of 16 individuals with stages IA-IIIB NSCLC who received autologous DC vaccines matured with dendritic cell/T cell-derived maturation factor (DCTCMF). Here we report the results of a continuation study with similar inclusion criteria, immunization protocol, and analysis, using an immature DC vaccine. Of the 14 participants, 7 had undergone surgical resection (stage I/II), with or without adjuvant therapy, and 7 with unresectable stage III had been treated with chemo-radiation alone. Autologous DCs were pulsed with apoptotic bodies derived from an allogeneic NSCLC cell line that over-expresses Her2/neu, CEA, WT1, Mage2, and survivin. DCs were not exposed to any maturation stimulus. Individuals received two intradermal vaccines (average 8.1x10(7) DC per immunization) 1 month apart. Immune responses were measured by IFN-gamma ELISPOT, comparing relative number of antigen-reactive T-cells from pre-vaccine to timepoints post-immunization. Immunologic responses were seen in 4/7 stage III unresectable, and 6/7 stage I/II surgically resected patients, including 3/3 resected patients who had also received adjuvant chemo-radiation. There were no related adverse events. One of seven surgically resected patients recurred and 4/7 stage III patients progressed. Three of five patients with progressive disease showed no immunologic response. Data indicate that immature DC pulsed with apoptotic tumour cells have similar biologic activity to a DCTCMF-matured DC preparation delivered in a similar clinical protocol. Therapeutic efficacy is unknown and clinical outcomes are anecdotal.
Wang F, Yang M, Luo W, Zhou Q J Natl Cancer Cent. 2024; 2(4):243-262.
PMID: 39036549 PMC: 11256730. DOI: 10.1016/j.jncc.2022.10.002.
Neoantigen Identification and Dendritic Cell-Based Vaccines for Lung Cancer Immunotherapy.
Kumari K, Singh A, Chaudhary A, Singh R, Shanker A, Kumar V Vaccines (Basel). 2024; 12(5).
PMID: 38793749 PMC: 11125796. DOI: 10.3390/vaccines12050498.
Abascal J, Oh M, Liclican E, Dubinett S, Salehi-Rad R, Liu B Cells. 2023; 12(19).
PMID: 37830618 PMC: 10571973. DOI: 10.3390/cells12192404.
Nanotechnology-Based Nucleic Acid Vaccines for Treatment of Ovarian Cancer.
Gildiz S, Minko T Pharm Res. 2022; 40(1):123-144.
PMID: 36376606 PMC: 9663189. DOI: 10.1007/s11095-022-03434-4.
Dendritic Cell-Based Immunotherapy in Hot and Cold Tumors.
Kang B, Lee H Int J Mol Sci. 2022; 23(13).
PMID: 35806328 PMC: 9266676. DOI: 10.3390/ijms23137325.