Cancer letters
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Gastrointestinal (GI) cancer is a malignancy of the GI tract and accessory digestive organs. GI cancer patients develop resistance to chemotherapy, targeted therapy drugs and immune therapies. Although immune checkpoint inhibitors have shown promising clinical results in melanoma, etc., immune checkpoint blockade responds in only a subset of colorectal cancer (CRC) patients with microsatellite instability-high (MSI-H) tumours. ⋯ Immune suppressive cells, such as tumour-associated macrophages, regulatory T cells, and myeloid-derived suppressor cells, consist of a suppressive TIME to resist immune reactions. Combination approaches used to target the TIME, such as radiotherapy, chemotherapy, targeted therapy combined with checkpoint blockers or immune cell therapy, in addition to mono-immunotherapy, may provide better therapy responses. This review provides an analysis of recent developments regarding the role of the TIME in malignant progression, immunotherapy and the development of drug resistance in GI tract cancer, especially CRC, as well as approaches to overcome microenvironment-mediated resistance.
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Organoid technology has been remarkably improved over the last decade. Various organoids have been derived from different types of tissues and recapitulate their organ-specific gene expression signatures, particular tissue spatial structures and functions of their original tissue. ⋯ With the great expectations, PDOs will be widely used to facilitate the personalized medical decisions, which have the potential to profoundly improve patient outcomes. In this review, we will discuss the developmental details, current achievements, applications and challenges of organoid technology in precision cancer medicine.
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Microbiome is becoming crucial in that the balance between human health and disease can be mediated by the gut microbiome. The gut microbiome can modulate the host immune system both locally and systemically. ⋯ Here, we discuss the mutual relationship among gut microbiome, cancer, immunity, and cancer immunotherapy, with a focus on immunotherapy. Also, we briefly introduce the relevant challenges that affect the therapeutic efficacy and present the possible solutions.
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MicroRNAs (miRNAs) are endogenous small, non-coding RNAs that regulate genome expression at the post-transcriptional level. They are involved in a wide range of physiological processes including the maintenance of immune homeostasis and normal function. Accumulating evidence from animal studies show that alterations in pan or specific miRNA expression would break immunological tolerance, leading to autoimmunity. ⋯ In this review, we highlight the evidence that signifies the critical role of miRNAs in autoimmunity, specifically on their regulatory roles in the pathogenesis of several rheumatic diseases including systemic lupus erythematosus, rheumatoid arthritis and spondyloarthritis. The potential of miRNAs as biomarkers and therapeutic targets is also discussed. Manipulation of dysregulated miRNAs in vivo through miRNA delivery or inhibition offers promise for new therapeutic strategies in treating rheumatic diseases.
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Retraction Of Publication
Retraction notice to: Sensitization of squamous cell carcinoma to cisplatin induced killing by natural agents.
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor in Chief. An investigation by Wayne State University identified a discrepancy between the data reported in Figures 5 and the original collected data. The investigation committee concluded that this undermined the scientific basis of the publication, that no credible replacement data were available, and advised that the publication should be retracted.