American Association for Cancer Research
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Supplementary Table 2. from BAI1 Orchestrates Macrophage Inflammatory Response to HSV Infection—Implications for Oncolytic Viral Therapy

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posted on 2023-03-31, 19:50 authored by Chelsea Bolyard, W. Hans Meisen, Yeshavanth Banasavadi-Siddegowda, Jayson Hardcastle, Ji Young Yoo, Eric S. Wohleb, Jeffrey Wojton, Jun-Ge Yu, Samuel Dubin, Maninder Khosla, Bo Xu, Jonathan Smith, Christopher Alvarez-Breckenridge, Pete Pow-anpongkul, Flavia Pichiorri, Jianying Zhang, Matthew Old, Dan Zhu, Erwin G. Van Meir, Jonathan P. Godbout, Michael A. Caligiuri, Jianhua Yu, Balveen Kaur

List of genes differentially induced ({greater than or equal to} 1.5 fold) in macrophages cultured with rHSVQ1 (Q) vs. RAMBO (R) infected glioma cells (UI, uninfected).

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NIH

Pelotonia Fellowship

Southeastern Brain Tumor Foundation

CURE Childhood Cancer and St. Baldrick's Foundations

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ARTICLE ABSTRACT

Purpose: Brain angiogenesis inhibitor (BAI1) facilitates phagocytosis and bacterial pathogen clearance by macrophages; however, its role in viral infections is unknown. Here, we examined the role of BAI1, and its N-terminal cleavage fragment (Vstat120) in antiviral macrophage responses to oncolytic herpes simplex virus (oHSV).Experimental Design: Changes in infiltration and activation of monocytic and microglial cells after treatment of glioma-bearing mice brains with a control (rHSVQ1) or Vstat120-expressing (RAMBO) oHSV was analyzed using flow cytometry. Co-culture of infected glioma cells with macrophages or microglia was used to examine antiviral signaling. Cytokine array gene expression and Ingenuity Pathway Analysis (IPA) helped evaluate changes in macrophage signaling in response to viral infection. TNFα-blocking antibodies and macrophages derived from Bai1−/− mice were used.Results: RAMBO treatment of mice reduced recruitment and activation of macrophages/microglia in mice with brain tumors, and showed increased virus replication compared with rHSVQ1. Cytokine gene expression array revealed that RAMBO significantly altered the macrophage inflammatory response to infected glioma cells via altered secretion of TNFα. Furthermore, we showed that BAI1 mediated macrophage TNFα induction in response to oHSV therapy. Intracranial inoculation of wild-type/RAMBO virus in Bai1−/− or wild-type non–tumor-bearing mice revealed the safety of this approach.Conclusions: We have uncovered a new role for BAI1 in facilitating macrophage anti-viral responses. We show that arming oHSV with antiangiogenic Vstat120 also shields them from inflammatory macrophage antiviral response, without reducing safety. Clin Cancer Res; 23(7); 1809–19. ©2016 AACR.

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