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Centre for Cancer Biomarkers CCBIO
CCBIO Seminar series

CCBIO Seminar - Øystein Rekdal

Welcome to a CCBIO Seminar with speaker Øystein Rekdal from Lytix Biopharma AS and The Arctic University of Norway, Tromsø. Title: "From Bench to Bedside with a first in class oncolytic peptide".

Content

Speaker: Øystein Rekdal, PhD, from Lytix Biopharma AS and The Arctic University of Norway, Tromsø

Title: From Bench to Bedside with a first in class oncolytic peptide

Abstract:

The oncolytic peptide LTX-315 has been designed de novo based on structureactivity relationship studies of host defense peptides. This peptide has the ability to kill human cancer cells and induce a specific anticancer immune response when injected locally into tumors established in immunocompetent mice. The oncolytic effect of LTX-315 involves perturbation of the plasma membrane and the mitochondria with subsequent release of danger-associated molecular pattern molecules and tumor antigens which highlights the ability of LTX-315 to induce complete regression and protective immune responses. Systemic efficacy can be enhanced in vivo by combination with several other types of cancer therapies.

Clinical safety has been demonstrated as a single agent administered intratumorally in a phase I study. Best overall response seen in cancer patients was stable disease (SD). However, in several patients a marked tumor regression was observed in distant non-injected lesions. LTX-315 monotherapy resulted in increased number of cytotoxic CD8+ T cells in the majority of treated lesions. T cell receptor (TCR) sequencing revealed a systemic clonal expansion of T cells after LTX-315 treatment.  The clinical results generated demonstrate the potential of LTX-315 as a primer of tumor specific T cells, making it ideal for combination with other immunotherapies.

Chairperson: Bjørn Tore Gjertsen

All interested researchers, students and others are welcome, both to the seminar and the following pizza get-together!