Related Experiment Video

Updated: Apr 15, 2026

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
12:42

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo

Published on: January 7, 2019

10.4K

Double-faceted mechanism of parvoviral oncosuppression

Karsten Geletneky1, Jürg Pf Nüesch2, Assia Angelova2

  • 1German Cancer Research Center, Infection and Cancer Program, Division of Tumor Virology, 69120 Heidelberg, Germany; Department of Neurosurgery, University Hospital, 69120 Heidelberg, Germany.

Current Opinion in Virology
|April 5, 2015
PubMed

Insights

The H-1 parvovirus (H-1PV) shows promise in cancer therapy by directly killing tumor cells and stimulating the immune system. Modified H-1PV variants and CpG motifs enhance its effectiveness as an oncolytic vaccine adjuvant.

Area of Science:

  • Oncology
  • Virology
  • Immunology

Background:

  • The H-1 parvovirus (H-1PV) exhibits dual oncosuppressive mechanisms: direct tumor cell killing (oncotoxicity) and immune system activation (immunostimulation).
  • While H-1PV effectively targets many human tumor cells, including drug-resistant types, its propagation in neoplastic tissues is limited by some cells' inability to support progeny virus production.
  • This limitation necessitates the development of H-1PV variants with enhanced replication and spreading capabilities in human tumors.

Purpose of the Study:

  • To enhance the oncosuppressive action of H-1PV for cancer therapy.
  • To develop H-1PV variants with improved tumor cell multiplication and spreading.
  • To investigate the potential of H-1PV as an anticancer vaccine adjuvant by incorporating immunostimulatory CpG motifs.

Main Methods:

  • Forced selection of H-1PV variants for enhanced replication in human tumor cells.
  • Engineering H-1PV with immunostimulatory CpG motifs while preserving replication and oncolysis.
  • Conducting a clinical study involving H-1PV treatment in glioma patients.

Main Results:

  • H-1PV demonstrates oncotoxicity against a range of human tumor cells, including drug-resistant ones.
  • Modified H-1PV variants show enhanced multiplication and spreading in human tumor cells.
  • H-1PV armed with CpG motifs acts as an effective anticancer vaccine adjuvant.
  • Clinical study in glioma patients showed intratumoral synthesis of the viral oncotoxic protein NS1 and increased immune cell infiltration.

Conclusions:

  • H-1PV is a promising oncolytic virus with potential for cancer therapy.
  • Development of H-1PV variants and combination with CpG motifs can overcome limitations and enhance therapeutic efficacy.
  • Clinical evidence supports H-1PV's role in inducing anti-tumor immune responses.

More Related Videos

Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production08:32

Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production

Published on: March 2, 2014

11.0K
Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice07:17

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

Published on: June 22, 2016

10.5K

Related Concept Videos

Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
7.3K
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

3.2K
Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
36
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
2.6K
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
60
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
8.5K