RGD Reference Report - Personal Neoantigens From Patients With NSCLC Induce Efficient Antitumor Responses. - Rat Genome Database

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Personal Neoantigens From Patients With NSCLC Induce Efficient Antitumor Responses.

Authors: Zhang, Wei  Yin, Qi  Huang, Haidong  Lu, Jingjing  Qin, Hao  Chen, Si  Zhang, Wenjun  Su, Xiaoping  Sun, Weihong  Dong, Yuchao  Li, Qiang 
Citation: Zhang W, etal., Front Oncol. 2021 Apr 13;11:628456. doi: 10.3389/fonc.2021.628456. eCollection 2021.
RGD ID: 151665816
Pubmed: PMID:33928024   (View Abstract at PubMed)
PMCID: PMC8076796   (View Article at PubMed Central)
DOI: DOI:10.3389/fonc.2021.628456   (Journal Full-text)


Objective: To develop a neoantigen-targeted personalized cancer treatment for non-small cell lung cancer (NSCLC), neoantigens were obtained from collected human lung cancer samples, and the utility of neoantigen and neoantigen-reactive T cells (NRTs) was assessed.
Methods: Tumor specimens from three patients with NSCLC were obtained and analyzed by whole-exome sequencing, and neoantigens were predicted accordingly. Dendritic cells and T lymphocytes were isolated, NRTs were elicited and IFN-γ ELISPOT tests were conducted. HLA-A2.1/Kb transgenic mice were immunized with peptides from HLA-A*02:01+patient with high immunogenicity, and NRTs were subjected to IFN-γ, IL-2 and TNF-α ELISPOT as well as time-resolved fluorescence assay for cytotoxicity assays to verify the immunogenicity in vitro. The HLA-A*02:01+lung cancer cell line was transfected with minigene and inoculated into the flanks of C57BL/6nu/nu mice and the NRTs induced by the immunogenic polypeptides from autologous HLA-A2.1/Kb transgenic mice were adoptively transfused to verify their immunogenicity in vivo.
Results: Multiple putative mutation-associated neoantigens with strong affinity for HLA were selected from each patient. Immunogenic neoantigen were identified in all three NSCLC patients, the potency of ACAD8-T105I, BCAR1-G23V and PLCG1-M425L as effective neoantigen to active T cells in suppressing tumor growth was further proven both in vitro and in vivo using HLA-A2.1/Kb transgenic mice and tumor-bearing mouse models.
Conclusion: Neoantigens with strong immunogenicity can be screened from NSCLC patients through the whole-exome sequencing of patient specimens and machine-learning-based neoantigen predictions. NRTs shown efficient antitumor responses in transgenic mice and tumor-bearing mouse models. Our results indicate that the development of neoantigen-based personalized immunotherapies in NSCLC is possible.
Precis: Neoantigens with strong immunogenicity were screened from NSCLC patients. This research provides evidence suggesting that neoantigen-based therapy might serve as feasible treatment for NSCLC.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
PLCG1Humanlung non-small cell carcinoma treatmentIMP human cell line in a mouse modelRGD 
Plcg1Ratlung non-small cell carcinoma treatmentISOPLCG1 (Homo sapiens)human cell line in a mouse modelRGD 
Plcg1Mouselung non-small cell carcinoma treatmentISOPLCG1 (Homo sapiens)human cell line in a mouse modelRGD 

Objects Annotated

Genes (Rattus norvegicus)
Plcg1  (phospholipase C, gamma 1)

Genes (Mus musculus)
Plcg1  (phospholipase C, gamma 1)

Genes (Homo sapiens)
PLCG1  (phospholipase C gamma 1)


Additional Information