Abstract B85: Anticancer efficacy of a novel immune-stimulating oncolytic virus: VG161 in gastrointestinal cancers
Notice bibliographique
Résumé
Abstract Oncolytic viruses (OVs) are the wild-type or genomic modified viruses, which can specifically replicate in cancer cells but not in normal cells. They cause cancer cell lysis and more importantly, their replication in tumor cells induces an antitumor immune response from the host. As synergistic stimulation of antitumor immune response requires multiple immune-regulatory factors, OVs armed with multiple immune-modulating factors are of high potential in cancer immunotherapy. We have constructed a novel herpes simplex virus type-1 virus (HSV-1), VG161, that is armed with IL12, IL15, and a unique PDL-1 peptide blocker. The aim of this study is to investigate the anticancer efficacy of VG161 in gastrointestinal (GI) cancers including gastric, hepatic, and colorectal cancers. The immune-stimulating activities in tumor-bearing immune competent mice were also demonstrated. VG161 was given to the tumor-bearing animals by intratumor injection (5 × 106-5 × 107 PFU/animal, once a day for 3-5 days). Antitumor activity of VG161 was tested in both immune-deficient mice as well as in immune-competent mice. Oncolytic activity of VG161 was demonstrated in human gastric (SGC-7901), hepatic (patient-derived xenograft, PDX), and colorectal (LS174T) cancer-bearing nude mice as the human tumors are susceptible to HSV infection and the immune system is compromised in those models. To determine the antitumor immune response activated by VG161, colorectal cancer (CT26) syngeneic model was used in immune competent animals and T cell subpopulation analysis, ELISPOT, and tumor rechallenge assay was applied to measure specific antitumor immunity. VG161 caused complete tumor eradication in PDX and CT26 tumor models and significantly inhibited tumor growth in SGC-7901 and LS174T models. All animals treated with VG161 survived for many months till sacrificed. In the CT26 model, no tumor could be found after rechallenging with the same tumor cells. The number of CD8+ tumor infiltrated T cells was significantly increased, and systemic specific anticancer immunity was confirmed by ELISPOT assay on T cells isolated from spleen. VG161 is a novel oncolytic virus that is both strong in oncolysis and stimulating antitumor immunity for GI cancers. Intratumorally expressing multiple immune-regulatory factors by an oncolytic virus may significantly change the GI tumor immune microenvironment and stimulate anticancer immunity, to further enhance the efficacy of the oncolytic virus. Citation Format: Ronghua Zhao, Jun Ding, Tianchi Liu, Shuyun Liu, Dmitry Chouljenko, Yanal Murad, Erica Lee, Guoyu Liu, Luke Bu, William Jia. Anticancer efficacy of a novel immune-stimulating oncolytic virus: VG161 in gastrointestinal cancers [abstract]. In: Proceedings of the AACR Special Conference on Tumor Immunology and Immunotherapy; 2018 Nov 27-30; Miami Beach, FL. Philadelphia (PA): AACR; Cancer Immunol Res 2020;8(4 Suppl):Abstract nr B85.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».