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Expanding Cancer Immunotherapy by Exploiting Recall Immunity -- A New Co-Therapy Option for Checkpoint Inhibitors, Upcoming Webinar Hosted by Xtalks

In this free webinar, the featured speaker from SRI International will discuss a new immunotherapy option to improve the efficacy of checkpoint inhibitors. The speaker will present the use of a novel intracellular delivery platform to internalize a wide variety of biotherapeutics to specific target cells. The Targeted Antigen Loaded Liposomes (TALL)TM system involves activating recall immunity in cancer immunotherapy, and aims to expand the cancer patient population for checkpoint inhibitor therapy.


News provided by

Xtalks

Jan 14, 2021, 08:30 ET

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TORONTO, Jan. 14, 2021 /PRNewswire-PRWeb/ -- Immune checkpoint inhibitors (CIs) have emerged as a revolutionary treatment for several cancer types. They enhance immune recognition by silencing checkpoints and allowing T-cells to attack tumor cells. Despite the significant improvement in prognosis for some cancer patients, there are challenges in using CIs for the treatment of all cancers.

For example, CIs do not work well on immune-cold tumors, which are tumors that are not inflamed, thereby eliciting an insufficient response from the immune system. They are also not as effective in tumors with low mutational burden, due to the dependence on tumor "self" antigens for immune recognition. Therefore, there is a need for a solution to improve the efficacy of CIs to make them applicable to the entire cancer patient population.

As TALL can provide a potent synthetic antigen specifically to tumor cells, it can turn immune-cold tumors into immune-hot tumors to elicit a robust immune response.

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To address this challenge, SRI International has developed a novel immunotherapy that is capable of delivering previously encountered antigenic peptides specifically to cancer cells and facilitating their presentation through the MHC class I pathway. This new therapy utilizes a synthetic nanoparticle delivery system comprised of three components: a neutral stealth liposome, encapsulated synthetic immunogenic HLA class I restricted peptides derived from the measles virus (MV) and a tumor-targeting peptide on the external surface of the liposome.

The targeting peptide results in accumulation of the liposomes specifically inside cancer cells, and facilitates presentation of the MV-derived immunogenic peptides specifically in HLA class I molecules. SRI International refers to this system as "Targeted Antigen Loaded Liposomes" (TALL). Therefore, TALL can generate a strong secondary immune response specifically against the targeted tumor cells in a patient who has been previously vaccinated against, or infected by, MV.

In short, the strategy is attempting to trick the immune system into responding as though the cancer cell is infected with MV without the use of a viral particle. SRI International has shown that treatment with TALL alone substantially reduces the growth of lung, triple-negative breast and pancreatic tumors in mice.

As TALL can provide a potent synthetic antigen specifically to tumor cells, it can turn immune-cold tumors into immune-hot tumors to elicit a robust immune response.

SRI International has conducted pilot studies to determine the efficacy of combining TALL with the anti-PD1 checkpoint inhibitor. Their results using the combination therapy showed at least a 10-fold reduction in tumor burden in mice bearing orthotopic breast and pancreatic tumors, respectively, when compared to using CI treatment alone. The combination treatment also successfully prevented metastasis from occurring.

Register for this webinar to learn about how TALL can successfully be used in combination with existing immunotherapies, like checkpoint inhibitors, to generate a robust cytotoxic T lymphocyte response directed specifically against the tumor, resulting in a drastic reduction of tumor burden.

Join Indu Venugopal, PhD, Bioresearch Scientist, SRI International, for the live webinar on Tuesday, February 2, 2021 at 11am EST (4pm GMT/UK).

For more information, or to register for this event, visit Expanding Cancer Immunotherapy by Exploiting Recall Immunity — A New Co-Therapy Option for Checkpoint Inhibitors.

ABOUT XTALKS

Xtalks, powered by Honeycomb Worldwide Inc., is a leading provider of educational webinars to the global life science, food and medical device community. Every year, thousands of industry practitioners (from life science, food and medical device companies, private & academic research institutions, healthcare centers, etc.) turn to Xtalks for access to quality content. Xtalks helps Life Science professionals stay current with industry developments, trends and regulations. Xtalks webinars also provide perspectives on key issues from top industry thought leaders and service providers.

To learn more about Xtalks visit http://xtalks.com
For information about hosting a webinar visit http://xtalks.com/why-host-a-webinar/

Media Contact

Ayesha Rashid, Xtalks, +1 (416) 977-6555 x 272, [email protected]

SOURCE Xtalks

Related Links

https://xtalks.com/

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