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Background: Patients undergoing neoadjuvant chemotherapy (NC) for invasive breast cancer (IBC) need indicators to track their progress during treatment. The goal of this research is to learn how cyclin D1 works in conjunction with taxane and non-taxane therapy for people with IBC.
Methods: There were 31 examples divided into two groups, based on: those using a different type of NC (taxane- or non-taxane-based), and NC administration time (before or after). Tumor grade, age, PR, ER, Ki-67, HER2, and Cyclin D1 expression were among the factors considered. Using immunohistochemical labeling, we were able to categorize cyclin D1 levels according to a threshold value, and we supplemented this with data we found in our databases. To analyze the data, we used a modified linear model.
Results: The expression of Cyclin D1 decreased after NC delivery (p=0.086). Cyclin D1 expression was reduced in the taxane group (p=0.792). The non-taxane group also saw no differences in outcomes (p = 0.065). There was a larger decrease in Cyclin D1 expression in the non-taxane group compared to the taxane group, but the difference was not statistically significant (p=0.200).
Conclusion: Cyclin D1 expression, even if the differences are not statistically significant, may be a prognostic indicator of NC reaction in IBC. The involvement of Cyclin D1 in NC warrants more research with bigger IBC sample sizes.
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http://dx.doi.org/10.31557/APJCP.2023.24.4.1131 | DOI Listing |
Biomed Environ Sci
August 2025
Gastrointestinal Disease Centre, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei, China.
Objective: To explore the correlation between chromosome 8 open reading frame 76 (C8orf76) and cyclin-dependent kinase 4 (CDK4) and the potential predictive effect of C8orf76 and CDK4 on the prognosis of colorectal cancer (CRC).
Methods: We constructed a protein-protein interaction network of C8orf76-related genes and analyzed the prognostic signatures of C8orf76 and CDK4. Clinicopathological features of C8orf76 and CDK4 were visualized using a nomogram.
Sci China Life Sci
September 2025
State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University Cancer Institute and Hospital, Tianjin Key Labora
Histone arginine methylation by protein arginine methyltransferases (PRMTs) is crucial for transcriptional regulation and is implicated in cancers. Despite their therapeutic potential, some PRMTs present challenges as drug targets due to their context-dependent activities. Here, we demonstrate that hypoxia triggers the rapid condensation of PRMT2, which is essential for its histone H3R8 asymmetric dimethylation (H3R8me2a) activity.
View Article and Find Full Text PDFExp Cell Res
September 2025
Cancer Biology Laboratory, Dept of Life Sciences, GITAM School of Sciences, GITAM (Deemed to be University), Visakhapatnam-530045, Andhra Pradesh, India. Electronic address:
CD151 is a tetraspanin, abnormally expressed in triple negative breast cancer (TNBC). It is a prominent component of exosomes, facilitating the secretion of proteins that promote metastasis and drug resistance. We have previously demonstrated that silencing the CD151 gene reduces metastasis in TNBC.
View Article and Find Full Text PDFBiochim Biophys Acta Mol Cell Res
September 2025
Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland College Park, College Park, MD, 20742, USA. Electronic address:
Translocon-associated protein subunit beta (TRAPβ), also known as signal sequence receptor 2 (SSR2) serves as an auxiliary protein facilitating co-translational translocation in the endoplasmic reticulum (ER); however, its role in colorectal cancer is unknown to date. The objectives of the current study are to examine if TRAPβ/SSR2 knockdown affects the cell proliferation and to elucidate mechanisms by which TRAPβ/SSR2 regulates proliferation of human colorectal cancer. We silenced TRAPβ/SSR2 transiently and stably in human colorectal cancer cell lines and analyzed cell proliferative properties.
View Article and Find Full Text PDFAutophagy
September 2025
Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
Immune checkpoint inhibitors (ICIs) can re-active the immune response and induce a complete response in mismatch repair-deficient and microsatellite instability-high (dMMR/MSI-H) colorectal cancer (CRC). However, most CRCs exhibit proficient mismatch repair and microsatellite stable (pMMR/MSS) phenotypes with limited immunotherapy response because of sparse intratumoral CD8 T-lymphocyte infiltration. Cellular senescence has been reported to involve immune cell infiltration through a senescence-associated secretory phenotype (SASP).
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