JIJIE XIAO¹, HONG XIAO², YUJUN CAI³, JIANWEI LIAO¹, JUE LIU¹, LIN YAO¹, SHAOLIN LI^1,*

Oncology Research, Vol.32, No.4, pp. 691-702, 2024, DOI:10.32604/or.2023.030767 - 20 March 2024

Abstract Osteosarcoma is a malignant tumor originating from bone tissue that progresses rapidly and has a poor patient prognosis. Immunotherapy has shown great potential in the treatment of osteosarcoma. However, the immunosuppressive microenvironment severely limits the efficacy of osteosarcoma treatment. The dual pH-sensitive nanocarrier has emerged as an effective antitumor drug delivery system that can selectively release drugs into the acidic tumor microenvironment. Here, we prepared a dual pH-sensitive nanocarrier, loaded with the photosensitizer Chlorin e6 (Ce6) and CD47 monoclonal antibodies (aCD47), to deliver synergistic photodynamic and immunotherapy of osteosarcoma. On laser irradiation, Ce6 can generate More > Graphic Abstract

QIUQIANG CHEN^1,*, XUEJUN GUO², WENXUE MA^3,*

Oncology Research, Vol.32, No.1, pp. 49-60, 2024, DOI:10.32604/or.2023.042383 - 15 November 2023

Abstract Cancer immunotherapy has emerged as a promising strategy for the treatment of cancer, with the tumor microenvironment (TME) playing a pivotal role in modulating the immune response. CD47, a cell surface protein, has been identified as a crucial regulator of the TME and a potential therapeutic target for cancer therapy. However, the precise functions and implications of CD47 in the TME during immunotherapy for cancer patients remain incompletely understood. This comprehensive review aims to provide an overview of CD47’s multifaced role in TME regulation and immune evasion, elucidating its impact on various types of immunotherapy… More > Graphic Abstract

Xuejian Liu^*1, Xia Wu^*1, Yanming Wang^†, Yuhua Li^*, Xiangli Chen^*, Wenchuan Yang^*, Lihua Jiang^*

Oncology Research, Vol.27, No.4, pp. 415-422, 2019, DOI:10.3727/096504018X15155538502359

Abstract Cluster of differentiation 47 (CD47) overexpression is common in various malignancies. This study investigated whether CD47 promotes human glioblastoma invasion and, if so, the underlying mechanisms involved. CD47 expression was found to be stronger in tissues of patients with glioblastoma and in various cancer cell lines than in normal controls. CD47 downregulation via siRNA suppressed invasion in vitro, whereas CD47 overexpression through plasmid transfection exerted the opposite effect. However, overexpression or knocking down of CD47 had no effect on cell proliferation. Moreover, CD47 expression was related to Akt phosphorylation at the cellular molecular level. Suppression More >

Hua Tao, Pudong Qian, Feijiang Wang, Hongliang Yu, Yesong Guo

Oncology Research, Vol.25, No.9, pp. 1579-1587, 2017, DOI:10.3727/096504017X14900505020895

Abstract Esophageal squamous cell cancer is a highly aggressive cancer with a dismal 5-year survival rate. CD47 is a cell transmembrane protein that is involved in cell apoptosis, proliferation, adhesion, migration, and antigen presentation in the immune system. By interacting with signal regulatory protein-a expressed in antigenpresenting cells (APCs), CD47 acts as an antiphagocytic mechanism to inhibit APC-dependent antigen presentation. Overexpression of CD47 was found in various types of cancer. However, its role in esophageal squamous cell cancer is not yet clear. Anti-CD47 is an antagonist of CD47 signaling pathways by competing with its ligand. In… More >