TGF-β2

AGOURA HILLS, Calif., Oct. 28, 2024 (GLOBE NEWSWIRE) -- Oncotelic Therapeutics, Inc (OTCQB:OTLC) announced today its fourth publication of its TGFB2 series. Clinical data demonstrated that pancreatic cancer patients with high expression levels of either TGFB2, IRF9, or IFI27 showed improvement of median overall survival from 16-20 months to 72 months for patients with low levels of expression for both TGFB2 and either IRF9 or IFI27 validating that knockdown of IRF9 and IFI27 as therapeutic targets for TGFB2 therapeutics. https://www.mdpi.com/3003472 The publications of this series are available at Pubmed as follow: 1) TGFB2 mRNA Levels Prognostically Interact with Interferon-Alpha Receptor Activation of IRF9 and IFI27, and an Immune Checkpoint LGALS9 to Impact Overall Survival in Pancreatic Ductal Adenocarcinoma. Qazi S, Trieu V. Int J Mol Sci. 2024 Oct 18;25(20):11221. doi: 10.3390/ijms252011221. PMID: 39457004 2) Transforming Growth Factor Beta 2 (TGFB2) mRNA Levels, in Conjunction with Interferon-Gamma Receptor Activation of Interferon Regulatory Factor 5 (IRF5) and Expression of CD276/B7-H3, Are Therapeutically Targetable Negative Prognostic Markers in Low-Grade Gliomas. Trieu V, Maida AE, Qazi S. Cancers (Basel). 2024 Mar 19;16(6):1202. doi: 10.3390/cancers16061202. PMID: 38539537 Free PMC article. 3) Transforming Growth Factor Beta 2 (TGFB2) and Interferon Gamma Receptor 2 (IFNGR2) mRNA Levels in the Brainstem Tumor Microenvironment (TME) Significantly Impact Overall Survival in Pediatric DMG Patients. Qazi S, Talebi Z, Trieu V. Biomedicines. 2024 Jan 15;12(1):191. doi: 10.3390/biomedicines12010191. PMID: 38255296 Free PMC article. 4) High Intra-Tumor Transforming Growth Factor Beta 2 Level as a Predictor of Poor Treatment Outcomes in Pediatric Diffuse Intrinsic Pontine Glioma. Uckun FM, Qazi S, Trieu V. Cancers (Basel). 2023 Mar 9;15(6):1676. doi: 10.3390/cancers15061676. PMID: 36980562 Free PMC article. Additional information on our current phase 3 can be found at: https://www.youtube.com/watch?v=5KqdbySDRKE About Oncotelic Oncotelic (f/k/a Mateon Therapeutics, Inc.), was formed in the State of New York in 1988 as OXiGENE, Inc., was reincorporated in the State of Delaware in 1992, and changed its name to Mateon Therapeutics, Inc. in 2016, and Oncotelic Therapeutics, Inc. in November 2020. Oncotelic is seeking to leverage its deep expertise in oncology drug development to improve treatment outcomes and survival of cancer patients with a special emphasis on rare pediatric cancers. Oncotelic has rare pediatric designation for Diffuse Intrinsic Pontine Glioma (“DIPG” through OT-101) through its 45% joint venture, GMP Biotechnology Limited, melanoma (through CA4P), and Acute Myeloid Leukemia (through OXi 4503). Oncotelic acquired PointR Data Inc. in November 2019 to build an AI driven biotechnology company. Further, Oncotelic acquired AL-101, during the 4th quarter of 2021, for the intranasal delivery of apomorphine. We intend to develop AL-101 for the treatment of Parkinson Disease, erectile dysfunction, female sexual disorder and hypoactive sexual desire disorder. All these ailments have a very large population suffering from them and there is a need for treatments for each. For more information on AL-101, refer to our Annual Report on Form 10-K/A filed with the SEC on April 19, 2023. Oncotelic's Cautionary Note on Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this communication regarding strategy, future operations, future financial position, prospects, plans and objectives of management are forward-looking statements. Words such as "may", "expect", "anticipate" "hope", "vision", "optimism", "design", "exciting", "promising", "will", "conviction", "estimate," "intend," "believe", "quest for a cure of cancer", "innovation-driven", "paradigm-shift", "high scientific merit", "impact potential" and similar expressions are intended to identify forward-looking statements. Forward looking statements contained in this press release include, but are not limited to, statements about future plans related to the operations of the JV, taking the JV into an initial public offering or the success thereof, the progress, timing of clinical development, scope and success of future clinical trials, the reporting of clinical data for the Company’s product candidates and the potential use of the Company's product candidates to treat various cancer indications as well as obtaining required regulatory approval to conduct clinical trials and upon granting of approval by the regulatory agencies, the successful marketing of the products; building and the success of our nanoparticle platform and the related success of launching the platform, the development of the Company’s AI suite including but not limited to AI Chatbots, the public access to the Company’s AI suite, the success of the development of the AI suite or any other AI technologies and whether if any or portion thereof the Company’s AI suite or technologies will be commercialized and launched for sale. Each of these forward-looking statements involves risks and uncertainties, and actual results may differ materially from these forward-looking statements or may not occur at all. Many factors may cause differences between current expectations and actual results, including unexpected safety or efficacy data observed during preclinical or clinical studies, clinical trial site activation or enrollment rates that are lower than expected, changes in expected or existing competition, changes in the regulatory environment, failure of collaborators to support or advance collaborations or product candidates and unexpected litigation or other disputes, taking the Company or its affiliates through initial public offerings. These risks are not exhaustive, the company faces known and unknown risks, including the risk factors described in the Company's Annual Report on Form 10-K/A filed with the SEC on April 19, 2023 and in the company's other periodic filings. Forward-looking statements are based on expectations and assumptions as of the date of this press release. Except as required by law, the company does not assume any obligation to update forward-looking statements contained herein to reflect any change in expectations, whether because of new information, future events, or otherwise. Contact Information: For Oncotelic Therapeutics, Inc.:Investor Relationsir@oncotelic.com

AGOURA HILLS, Calif., Oct. 23, 2024 (GLOBE NEWSWIRE) -- Oncotelic Therapeutics, Inc (OTCQB:OTLC) announced today its presentation at Precision in Drug Discovery & Preclinical Summit. Dr. Wen-Han Chang, Nanomedicine Sr. Manager, and Dr. Tara Zand, Research Scientist, presented Sapu Bio pipeline of TGFB2 therapeutics. For additional information please go to: https://events.precision-globe.com/single-event/precision-drug-discovery-preclinical-summit-san-diego##. Dr. Chang and Dr. Zand are experienced nanomedicine and precision drug development dedicated to finding the cure for pancreatic and brain cancers. https://www.linkedin.com/in/wen-han-chang-106002139/ https://www.linkedin.com/in/tara-zand-phd-512042b5/ https://www.linkedin.com/posts/precision-evolution-global-inc_pddpsummit-sandiego-precisionevolutionglobal-activity-7253106596543619072-IqP5/ About Oncotelic Oncotelic (f/k/a Mateon Therapeutics, Inc.), was formed in the State of New York in 1988 as OXiGENE, Inc., was reincorporated in the State of Delaware in 1992, and changed its name to Mateon Therapeutics, Inc. in 2016, and Oncotelic Therapeutics, Inc. in November 2020. Oncotelic is seeking to leverage its deep expertise in oncology drug development to improve treatment outcomes and survival of cancer patients with a special emphasis on rare pediatric cancers. Oncotelic has rare pediatric designation for Diffuse Intrinsic Pontine Glioma (“DIPG” through OT-101) through its 45% joint venture, GMP Biotechnology Limited, melanoma (through CA4P), and Acute Myeloid Leukemia (through OXi 4503). Oncotelic acquired PointR Data Inc. in November 2019 to build an AI driven biotechnology company. Further, Oncotelic acquired AL-101, during the 4th quarter of 2021, for the intranasal delivery of apomorphine. We intend to develop AL-101 for the treatment of Parkinson Disease, erectile dysfunction, female sexual disorder and hypoactive sexual desire disorder. All these ailments have a very large population suffering from them and there is a need for treatments for each. For more information on AL-101, refer to our Annual Report on Form 10-K/A filed with the SEC on April 19, 2023. Oncotelic's Cautionary Note on Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this communication regarding strategy, future operations, future financial position, prospects, plans and objectives of management are forward-looking statements. Words such as "may", "expect", "anticipate" "hope", "vision", "optimism", "design", "exciting", "promising", "will", "conviction", "estimate," "intend," "believe", "quest for a cure of cancer", "innovation-driven", "paradigm-shift", "high scientific merit", "impact potential" and similar expressions are intended to identify forward-looking statements. Forward looking statements contained in this press release include, but are not limited to, statements about future plans related to the operations of the JV, taking the JV into an initial public offering or the success thereof, the progress, timing of clinical development, scope and success of future clinical trials, the reporting of clinical data for the Company’s product candidates and the potential use of the Company's product candidates to treat various cancer indications as well as obtaining required regulatory approval to conduct clinical trials and upon granting of approval by the regulatory agencies, the successful marketing of the products; building and the success of our nanoparticle platform and the related success of launching the platform, the development of the Company’s AI suite including but not limited to AI Chatbots, the public access to the Company’s AI suite, the success of the development of the AI suite or any other AI technologies and whether if any or portion thereof the Company’s AI suite or technologies will be commercialized and launched for sale. Each of these forward-looking statements involves risks and uncertainties, and actual results may differ materially from these forward-looking statements or may not occur at all. Many factors may cause differences between current expectations and actual results, including unexpected safety or efficacy data observed during preclinical or clinical studies, clinical trial site activation or enrollment rates that are lower than expected, changes in expected or existing competition, changes in the regulatory environment, failure of collaborators to support or advance collaborations or product candidates and unexpected litigation or other disputes, taking the Company or its affiliates through initial public offerings. These risks are not exhaustive, the company faces known and unknown risks, including the risk factors described in the Company's Annual Report on Form 10-K/A filed with the SEC on April 19, 2023 and in the company's other periodic filings. Forward-looking statements are based on expectations and assumptions as of the date of this press release. Except as required by law, the company does not assume any obligation to update forward-looking statements contained herein to reflect any change in expectations, whether because of new information, future events, or otherwise. Contact Information: For Oncotelic Therapeutics, Inc.:Investor Relationsir@oncotelic.com

▎药明康德内容团队编辑  对癌症患者来说，癌转移是极为凶险的事件，当一些癌细胞从原位肿瘤脱落进入循环系统，它们就可能在任何器官中重新生长。由于转移肿瘤的发生与发展往往难以预测，医生很难对此进行干预，因此癌转移也是导致癌症患者死亡的重要原因。 从时间上来看，在癌转移症状出现很早之前，从原位瘤脱落的播散性癌细胞（disseminated cancer cell，DCC）就已经在传播了。但是，不同DCC成长为新肿瘤的过程并不一致，有些DCC更具侵袭性，有些则会长期处于休眠状态。科学家正试图弄清楚哪些机制能让DCC维持在休眠状态，如此一来只要增强这类机制，就有望预防甚至阻止癌转移的发生。 图片来源：123RF 10月7日，《细胞》杂志的一项新研究找到了一个关键线索，作者发现器官组织中驻留的巨噬细胞是引导DCC休眠的关键。当游离的DCC进入新部位时，特定的巨噬细胞会响应、激活免疫信号，并通过分泌TGF-β2蛋白来调节癌细胞的信号通路，迫使癌细胞停止增殖，进入休眠状态。 研究中，来自阿尔伯特·爱因斯坦医学院与西奈山伊坎医学院的研究团队构建了一批转移性乳腺癌模型小鼠，这些乳腺癌细胞非常容易发生转移，而肺部是最为常见的转移部位。作者分析了处于不同阶段的肿瘤小鼠，结果显示在DCC进入肺部并形成聚集的早期，肺部的肺泡巨噬细胞（AM）数量会增加，并占据巨噬细胞的主导地位。 这些生活在肺部的巨噬细胞原本负责调节肺部组织的稳态、肺部发育并发挥免疫监视功能。作者发现，当DCC进入肺部后，肺泡巨噬细胞也开始活跃起来，并且在肺泡腔中与癌细胞发生相互作用。肺泡巨噬细胞与DCC的近距离接触会使得DCC的形态从椭球形变化成“M”形态，不过两者的相互作用不会引发细胞死亡。作者发现，肺泡巨噬细胞实现的是另一种控制癌细胞的方式——触发生长停滞。 ▲研究示意图（图片来源：参考资料[1]） 后续实验中，作者在同一环境中共同培养了一些DCC前体细胞（EL细胞）和肺泡巨噬细胞，结果与小鼠样本观察到的现象类似，EL细胞也会逐渐转变成了M型。除此之外，作者发现EL细胞的生长完全停止了，细胞克隆形成的能力显著下降。这一过程中，肺泡巨噬细胞表达的TGF-β2会与癌细胞的受体结合，持续刺激信号通路让癌细胞维持在休眠状态。 不过，如果是发展到后期的癌细胞与肺泡巨噬细胞接触，癌细胞的生长就不会受到抑制，这说明肺泡巨噬细胞的休眠控制只对早期的癌症发展有作用。与此对应的是，作者发现随着时间推移，DCC可能会逐渐对这种休眠信号产生抵抗，并重新恢复侵袭性以及实现转移，这也可能是癌症患者之间转移时间不同的原因之一。 研究通讯作者Julio A. Aguirre-Ghiso博士表示：“了解免疫细胞控制DCC的机制有望为我们带来阻止癌转移的全新策略。”他认为增强肺泡巨噬细胞等巨噬细胞的信号，让DCC长期处于休眠状态或许就是一种值得期待的抗癌方式。 参考资料： [1] Scientists discover that special immune cells stop metastatic cancer. Retrieved October 8, 2024 from https://www.eurekalert.org/news-releases/1060251 [2] Lung resident alveolar macrophages regulate the timing of breast cancer metastasis. Cell (2024). DOI: https://doi.org/10.1016/j.cell.2024.09.016 本文来自药明康德内容微信团队，欢迎转发到朋友圈，谢绝转载到其他平台。如有开设白名单需求，请在“学术经纬”公众号主页回复“转载”获取转载须知。其他合作需求，请联系wuxi_media@wuxiapptec.com。 免责声明：药明康德内容团队专注介绍全球生物医药健康研究进展。本文仅作信息交流之目的，文中观点不代表药明康德立场，亦不代表药明康德支持或反对文中观点。本文也不是治疗方案推荐。如需获得治疗方案指导，请前往正规医院就诊。