Results provide foundational proof-of-concept for a unique target ID in glioblastoma, build further confidence in Mnemo's EnfiniT Discovery Engine
PARIS, June 9, 2022 /PRNewswire/ -- Mnemo Therapeutics, a biotechnology company developing transformational immunotherapies, today announced a publication in Cell Reportsthat demonstrates peptides derived from transposable elements (TEs) mobile regions of DNA that move to other areas of the genome may represent cancer-specific targets for immunotherapy. The article is authored by a team of researchers working under the leadership of Sebastian Amigorena, Ph.D., CNRS research director, scientific co-founder of Mnemo and head of the Immune Responses and Cancer Team at Institut Curie (Immunity and Cancer Unit Institut Curie/Inserm).
"Mnemo is committed to comprehensively tackling the challenges facing immunotherapies, including the lack of suitable cancer-specific targets," said Mnemo Chief Executive Officer, Robert LaCaze. "We are extremely encouraged by the data put forth in this publication which validates our unique target ID approach and informs the future of Mnemo's science."
Traditionally, the human genome has been broadly broken down into two main categories the 4%, known to encode for proteins, and the 96%, with elements either noncoding and/or poorly understood, also known as the "dark genome." The data demonstrated in this publication provides compelling evidence to suggest that novel cancer targets can be found outside of the 4%, necessitating the expansion of our definition to include the "grey genome." The "grey genome", which accounts for around 45% of the human genome, is composed of TEs, long non-coding RNAs and a few other non-coding transcripts. Increased transcription of TEs is found to occur in some tumor cells, suggesting they may encode for cancer antigens. The publication, titled, "Single-cell RNA-seq-based proteogenomics identifies glioblastoma-specific transposable elements encoding HLA-I-presented peptides," explored this connection, demonstrating that these DNA features may hold the key to unlocking new targets for immunotherapy.
"Known targets are encoded by a very small percentage of the human genome, leaving vast regions rich with potential tumor-specific targets uncharacterized and unexplored," said Dr. Amigorena. "The research in this publication provides foundational evidence that we can probe the grey genome to identify features with promising potential to encode for cancer-specific targets."
In this study, researchers leveraged a sophisticated proteogenomic approach to explore the grey genome, in a search to uncover TE-derived peptides that can act as suitable cancer targets. Additional results are outlined below.
"While initially tested in glioblastoma, this approach is applicable across cell-types, laying the groundwork for its application in other cancer models for indication-specific antigen identification," Mnemo Co-Founder and Chief Operating Officer, Alain Maiore. "This research further validates Mnemo's EnfiniT Discovery Engine, which aims to overcome the key challenges facing current immunotherapies by enhancing therapeutic precision, durability, and potency."
References:Single-cell RNA-seq-based proteogenomics identifies glioblastoma-specific transposable elements encoding HLA-I-presented peptides.Pierre-Emmanuel Bont, Yago A. Arribas, Antonela Merlotti, Montserrat Carrascal, Jiasi Vicky Zhang, Elina Zueva, Zev A. Binder, Ccile Alanio, Christel Goudot, Sebastian Amigorena.
About Mnemo Therapeutics
Mnemo is developing transformational immunotherapies to improve the body's ability to fight and overcome cancer. Integral to Mnemo's approach is the EnfiniT Discovery Engine, composed of key technologies that work to identify novel cancer-specific antigens and enhance immune cells' memory and persistence. Mnemo will harness these technologies with multiple modalities across a range of oncology indications, engineering the future of immunotherapies to transform the lives of people with cancer. Mnemo is headquartered in Paris with an office in New York City, and it maintains state of the art laboratories in Paris, New York, and Princeton, New Jersey. The company leveragesan international talent pool and global resources in its quest to create immunological cures.
To learn more, visit https://mnemo-tx.comand follow Mnemo Therapeutics on Twitter (@MnemoTx) and LinkedIn.
SOURCE Mnemo Therapeutics
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