Lin Li

Publications (2)7.82 Total impact

• Article: Reactive oxygen species regulation of autophagy in cancer: Implications for cancer treatment.

  Lin Li, Ganchimeg Ishdorj, Spencer B Gibson
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  ABSTRACT: Reactive oxygen species (ROS) are important in regulating normal cellular processes, but deregulated ROS contribute to the development of various human diseases including cancers. Autophagy is one of the first lines of defense against oxidative stress damage. The autophagy pathway can be induced and upregulated in response to intracellular ROS or extracellular oxidative stress. This leads to selective lysosomal self-digestion of intracellular components to maintain cellular homeostasis. Hence, autophagy is the survival pathway, conferring stress adaptation and promoting viability under oxidative stress. However, increasing evidence has demonstrated that autophagy can also lead to cell death under oxidative stress conditions. In addition, altered autophagic signaling pathways that lead to decreased autophagy are frequently found in many human cancers. This review discusses the advances in understanding of the mechanisms of ROS-induced autophagy and how this process relates to tumorigenesis and cancer therapy.
  Free radical biology & medicine 07/2012; 53(7):1399-410. · 5.42 Impact Factor
• Article: Regulation of autophagy in hematological malignancies: role of reactive oxygen species.

  Ganchimeg Ishdorj, Lin Li, Spencer B Gibson
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  ABSTRACT: Hematological malignancies are characterized by the accumulation of lymphoid and myeloid cell types due to selective proliferation and survival in blood, bone marrow and lymph nodes. Treatments of hematological malignancies are often effective but eventually relapse, and drug resistance occurs. A better understanding of the mechanism of action of both chemotherapeutic drugs and drug resistance is required. Autophagy has been shown to regulate both cell survival and cell death, leading to both cancer development and tumor suppression. In addition, many chemotherapeutic drugs induce autophagy, leading to either drug resistance or cell death. Autophagy is regulated by signaling pathways such as p53 and by the production of reactive oxygen species (ROS). This review focuses on the regulation of autophagy in human hematologic malignancy leading to either cell survival or death. In addition, the role that ROS play in regulating autophagy and its implication for hematological cancers is discussed.
  Leukemia & lymphoma 07/2011; 53(1):26-33. · 2.40 Impact Factor