On March 20, 2025 MAIA Biotechnology, Inc., (NYSE American: MAIA) ("MAIA", the "Company"), a clinical-stage biopharmaceutical company developing targeted immunotherapies for cancer, reported the publication of preclinical data for its lead proprietary telomere-targeting THIO dimer in the peer-reviewed scientific journal Naunyn-Schmiedeberg’s Archives of Pharmacology (Press release, MAIA Biotechnology, MAR 20, 2025, View Source [SID1234651332]).
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In a preclinical study, THIO and its new described dimer form were found to be potent inhibitors of Glutathione S-transferase Pi (GSTP1), a key enzyme implicated in cancer progression and chemoresistance and a highly important factor for the detoxification of cancer cells. The findings suggest that the dimerized form of THIO could enhance chemotherapeutic efficacy by effectively targeting GSTP1 and reducing drug resistance. The article, titled "Investigation of the inhibitory effects of the telomere-targeted compounds on glutathione S-transferase P1," was published on February 15, 2025.
"The esteemed Archives of Pharmacology has published our first peer-reviewed paper about the unique potential of the lead molecule in our second-generation THIO program," said Vlad Vitoc, M.D., CEO of MAIA. "Preclinical findings illuminate the superior GSTP1 binding affinity and inhibitory potency of this novel prodrug and support continued development of this new strategy for cancer therapy."
MAIA’s second generation research and discovery platform seeks to identify new telomere-targeting THIO-like compounds with potentially improved specificity towards cancer cells relative to normal cells and with potentially increased anticancer activity. More than 80 THIO-like compounds have been developed as part of the second-generation telomere targeting program.
"Our manuscript highlights the potential of THIO’s dimer as a potent GSTP1 inhibitor and a promising new strategy for enhancing cancer treatment and overcoming drug resistance," said Chief Scientific Officer Sergei Gryaznov, Ph.D. "Further exploration of the combinatorial effects of THIO with standard chemotherapeutic agents could provide valuable insights for optimizing standard cancer treatment protocols. These efforts could pave the way for novel, targeted strategies in cancer therapy, offering new hope in the fight against drug-resistant cancers."
About Naunyn–Schmiedeberg’s Archives of Pharmacology
Naunyn–Schmiedeberg’s Archives of Pharmacology, founded in 1873, is the oldest existing pharmacological journal and a dedicated platform for new and significant information on drug action and toxicity of chemical compounds. The peer-reviewed scientific journal covers all fields of experimental and clinical pharmacology as well as toxicology and includes studies in neuropharmacology and cardiovascular pharmacology and those describing drug actions at the cellular, biochemical and molecular levels.
About Ateganosine
Ateganosine (THIO, 6-thio-dG or 6-thio-2’-deoxyguanosine) is a first-in-class investigational telomere-targeting agent currently in clinical development to evaluate its activity in Non-Small Cell Lung Cancer (NSCLC). Telomeres, along with the enzyme telomerase, play a fundamental role in the survival of cancer cells and their resistance to current therapies. The modified nucleotide 6-thio-2’-deoxyguanosine induces telomerase-dependent telomeric DNA modification, DNA damage responses, and selective cancer cell death. Ateganosine-damaged telomeric fragments accumulate in cytosolic micronuclei and activates both innate (cGAS/STING) and adaptive (T-cell) immune responses. The sequential treatment with ateganosine followed by PD-(L)1 inhibitors resulted in profound and persistent tumor regression in advanced, in vivo cancer models by induction of cancer type–specific immune memory. Ateganosine is presently developed as a second or later line of treatment for NSCLC for patients that have progressed beyond the standard-of-care regimen of existing checkpoint inhibitors.