keyword
https://read.qxmd.com/read/38537223/a-systems-framework-for-investigating-the-roles-of-multiple-transporters-and-their-impact-on-drug-resistance
#1
JOURNAL ARTICLE
Manfredi di San Germano, J Krishnan
Efflux transporters are a fundamental component of both prokaryotic and eukaryotic cells, play a crucial role in maintaining cellular homeostasis, and represent a key bridge between single cell and population levels. From a biomedical perspective, they play a crucial role in drug resistance (and especially multi-drug resistance, MDR) in a range of systems spanning bacteria and human cancer cells. Typically, multiple efflux transporters are present in these cells, and the efflux transporters transport a range of substrates (with partially overlapping substrates between transporters)...
January 23, 2024: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://read.qxmd.com/read/38536862/ultrastable-iodinated-oil-based-pickering-emulsion-enables-locoregional-sustained-codelivery-of-hypoxia-inducible-factor-1-inhibitor-and-anticancer-drugs-for-tumor-combination-chemotherapy
#2
JOURNAL ARTICLE
Zhihua Li, Xiaoya Liu, Jingyu Xiao, Hang Jiang, Le Ma, Yucheng Luo, Meijuan Wang, Yuwei Zhu, Hongliang Jiang, Hanyang Yao, To Ngai, Qiongyu Guo
Tumor hypoxia-associated drug resistance presents a major challenge for cancer chemotherapy. However, sustained delivery systems with a high loading capability of hypoxia-inducible factor-1 (HIF-1) inhibitors are still limited. Here, we developed an ultrastable iodinated oil-based Pickering emulsion (PE) to achieve locally sustained codelivery of a HIF-1 inhibitor of acriflavine and an anticancer drug of doxorubicin for tumor synergistic chemotherapy. The PE exhibited facile injectability for intratumoral administration, great radiopacity for in vivo examination, excellent physical stability (>1 mo), and long-term sustained release capability of both hydrophilic drugs (i...
March 27, 2024: ACS Biomaterials Science & Engineering
https://read.qxmd.com/read/38536720/exploration-of-drug-resistance-mechanisms-in-triple-negative-breast-cancer-cells-using-a-microfluidic-device-and-patient-tissues
#3
JOURNAL ARTICLE
Wanyoung Lim, Inwoo Hwang, Jiande Zhang, Zhenzhong Chen, Jeonghun Han, Jaehyung Jeon, Bon-Kyoung Koo, Sangmin Kim, Jeong Eon Lee, Youngkwan Kim, Kenneth J Pienta, Sarah R Amend, Robert H Austin, Jee-Yin Ahn, Sungsu Park
Chemoresistance is a major cause of treatment failure in many cancers. However, the life cycle of cancer cells as they respond to and survive environmental and therapeutic stress is understudied. In this study, we utilized a microfluidic device to induce the development of doxorubicin-resistant (DOXR) cells from triple negative breast cancer (TNBC) cells within 11 days by generating gradients of DOX and medium. In vivo chemoresistant xenograft models, an unbiased genome-wide transcriptome analysis, and a patient data/tissue analysis all showed that chemoresistance arose from failed epigenetic control of the nuclear protein-1 (NUPR1)/histone deacetylase 11 (HDAC11) axis, and high NUPR1 expression correlated with poor clinical outcomes...
March 27, 2024: ELife
https://read.qxmd.com/read/38535994/npepps-is-a-druggable-driver-of-platinum-resistance
#4
JOURNAL ARTICLE
Robert T Jones, Mathijs Scholtes, Andrew Goodspeed, Maryam Akbarzadeh, Saswat Mohapatra, Lily Elizabeth Feldman, Hedvig Vekony, Annie Jean, Charlene B Tilton, Michael V Orman, Shahla Romal, Cailin Deiter, Tsung Wai Kan, Nathaniel Xander, Stephanie P Araki, Molishree Joshi, Mahmood Javaid, Eric T Clambey, Ryan Layer, Teemu D Laajala, Sarah J Parker, Tokameh Mahmoudi, Tahlita C M Zuiverloon, Dan Theodorescu, James C Costello
UNLABELLED: There is an unmet need to improve the efficacy of platinum-based cancer chemotherapy, which is used in primary and metastatic settings in many cancer types. In bladder cancer, platinum-based chemotherapy leads to better outcomes in a subset of patients when used in the neoadjuvant setting or in combination with immunotherapy for advanced disease. Despite such promising results, extending the benefits of platinum drugs to a greater number of patients is highly desirable. Using the multiomic assessment of cisplatin-responsive and -resistant human bladder cancer cell lines and whole-genome CRISPR screens, we identified puromycin-sensitive aminopeptidase (NPEPPS) as a driver of cisplatin resistance...
March 27, 2024: Cancer Research
https://read.qxmd.com/read/38534924/modeling-5-fu-induced-chemotherapy-selection-of-a-drug-resistant-cancer-stem-cell-subpopulation
#5
JOURNAL ARTICLE
Amra Ramović Hamzagić, Danijela Cvetković, Marina Gazdić Janković, Nevena Milivojević Dimitrijević, Dalibor Nikolić, Marko Živanović, Nikolina Kastratović, Ivica Petrović, Sandra Nikolić, Milena Jovanović, Dragana Šeklić, Nenad Filipović, Biljana Ljujić
(1) Background: Cancer stem cells (CSCs) are a subpopulation of cells in a tumor that can self-regenerate and produce different types of cells with the ability to initiate tumor growth and dissemination. Chemotherapy resistance, caused by numerous mechanisms by which tumor tissue manages to overcome the effects of drugs, remains the main problem in cancer treatment. The identification of markers on the cell surface specific to CSCs is important for understanding this phenomenon. (2) Methods: The expression of markers CD24, CD44, ALDH1, and ABCG2 was analyzed on the surface of CSCs in two cancer cell lines, MDA-MB-231 and HCT-116, after treatment with 5-fluorouracil (5-FU) using flow cytometry analysis...
February 25, 2024: Current Oncology
https://read.qxmd.com/read/38534790/the-role-of-urothelial-cancer-associated-1-in-gynecological-cancers
#6
REVIEW
Eleni Nousiopoulou, Kleio Vrettou, Christos Damaskos, Nikolaos Garmpis, Anna Garmpi, Panagiotis Tsikouras, Nikolaos Nikolettos, Konstantinos Nikolettos, Iason Psilopatis
Gynecological cancers (GC) represent some of the most frequently diagnosed malignancies in women worldwide. Long-non-coding RNAs (lncRNAs) are regulatory RNAs increasingly being recognized for their role in tumor progression and metastasis in various cancers. Urothelial cancer-associated 1 (UCA1) is a lncRNA, first found deregulated in bladder cancer, and many studies have exposed its oncogenic effects in more tumors since. However, the role of UCA1 in gynecological malignancies is still unclear. This review aims to analyze and define the role of UCA1 in GC, in order to identify its potential use as a diagnostic, prognostic, or therapeutic biomarker of GC...
March 21, 2024: Current Issues in Molecular Biology
https://read.qxmd.com/read/38534787/unveiling-the-molecular-mechanism-of-trastuzumab-resistance-in-skbr3-and-bt474-cell-lines-for-her2-positive-breast-cancer
#7
JOURNAL ARTICLE
Anna Kokot, Sachin Gadakh, Indrajit Saha, Ewa Gajda, Michał Łaźniewski, Somnath Rakshit, Kaustav Sengupta, Ayatullah Faruk Mollah, Michał Denkiewicz, Katarzyna Górczak, Jürgen Claesen, Tomasz Burzykowski, Dariusz Plewczynski
HER2-positive breast cancer is one of the most prevalent forms of cancer among women worldwide. Generally, the molecular characteristics of this breast cancer include activation of human epidermal growth factor receptor-2 (HER2) and hormone receptor activation. HER2-positive is associated with a higher death rate, which led to the development of a monoclonal antibody called trastuzumab, specifically targeting HER2. The success rate of HER2-positive breast cancer treatment has been increased; however, drug resistance remains a challenge...
March 21, 2024: Current Issues in Molecular Biology
https://read.qxmd.com/read/38534761/genetic-signatures-for-distinguishing-chemo-sensitive-from-chemo-resistant-responders-in-prostate-cancer-patients
#8
JOURNAL ARTICLE
Lemohang Gumenku, Mamello Sekhoacha, Beynon Abrahams, Samson Mashele, Aubrey Shoko, Ochuko L Erukainure
Prostate cancer remains a significant public health concern in sub-Saharan Africa, particularly impacting South Africa with high mortality rates. Despite many years of extensive research and significant financial expenditure, there has yet to be a definitive solution to prostate cancer. It is not just individuals who vary in their response to treatment, but even different nodules within the same tumor exhibit unique transcriptome patterns. These distinctions extend beyond mere differences in gene expression levels to encompass the control and networking of individual genes...
March 11, 2024: Current Issues in Molecular Biology
https://read.qxmd.com/read/38534760/a-bee-trp-arg-dense-peptide-with-antiproliferation-efficacy-against-the-prostate-cancer-cell-line-du145
#9
JOURNAL ARTICLE
Ye-Eun Kim, Ki-Young Kim
Prostate cancer accounts for 14% of male cancer-related fatalities in the UK. Given the challenges associated with hormone-based therapies in the context of androgen-independent prostate cancer, there is an imperative need for research into anticancer drugs. N0821, a peptide belonging to the Trp-Arg dense region and derived from the homologous region of various bee species, shows substantial potential for an anticancer effect. Both MTT assays and 3D spheroid assays were conducted to substantiate its antiproliferation potential and strongly indicated the antiproliferation effect of N0820 (WWWWRWWRKI) and N0821 (YWWWWRWWRKI)...
March 10, 2024: Current Issues in Molecular Biology
https://read.qxmd.com/read/38534620/effect-of-hydrogel-stiffness-on-chemoresistance-of-breast-cancer-cells-in-3d-culture
#10
JOURNAL ARTICLE
Tianjiao Zeng, Huajian Chen, Toru Yoshitomi, Naoki Kawazoe, Yingnan Yang, Guoping Chen
Chemotherapy is one of the most common strategies for cancer treatment, whereas drug resistance reduces the efficiency of chemotherapy and leads to treatment failure. The mechanism of emerging chemoresistance is complex and the effect of extracellular matrix (ECM) surrounding cells may contribute to drug resistance. Although it is well known that ECM plays an important role in orchestrating cell functions, it remains exclusive how ECM stiffness affects drug resistance. In this study, we prepared agarose hydrogels of different stiffnesses to investigate the effect of hydrogel stiffness on the chemoresistance of breast cancer cells to doxorubicin (DOX)...
March 17, 2024: Gels
https://read.qxmd.com/read/38534354/the-potential-of-mushroom-extracts-to-improve-chemotherapy-efficacy-in-cancer-cells-a-systematic-review
#11
REVIEW
Jéssica Fonseca, Josiana A Vaz, Sara Ricardo
Chemoresistance is a challenge in cancer treatment, limiting the effectiveness of chemotherapy. Mushroom extracts have shown potential as treatments for cancer therapies, offering a possible solution to overcome chemoresistance. This systematic review aimed to explore the role of mushroom extracts in enhancing chemotherapy and reversing chemoresistance in cancer cells. We searched the PubMed, Web of Science and Scopus databases, following the PRISMA guidelines, and registered on PROSPERO. The extracts acted by inhibiting the proliferation of cancer cells, as well as enhancing the effect of chemotherapy...
March 14, 2024: Cells
https://read.qxmd.com/read/38534315/cisplatin-and-starvation-differently-sensitize-autophagy-in-renal-carcinoma-a-potential-therapeutic-pathway-to-target-variegated-drugs-resistant-cancerous-cells
#12
JOURNAL ARTICLE
Ankita Dutta, Subarna Thakur, Debasish Kumar Dey, Anoop Kumar
Cisplatin, a powerful chemotherapy medication, has long been a cornerstone in the fight against cancer due to chemotherapeutic failure. The mechanism of cisplatin resistance/failure is a multifaceted and complex issue that consists mainly of apoptosis inhibition through autophagy sensitization. Currently, researchers are exploring ways to regulate autophagy in order to tip the balance in favor of effective chemotherapy. Based on this notion, the current study primarily identifies the differentially expressed genes (DEGs) in cisplatin-treated autophagic ACHN cells through the Illumina Hi-seq platform...
March 7, 2024: Cells
https://read.qxmd.com/read/38533987/paradoxical-activation-of-oncogenic-signaling-as-a-cancer-treatment-strategy
#13
JOURNAL ARTICLE
Matheus Henrique Dias, Anoek Friskes, Siying Wang, Joao M Fernandes Neto, Frank van Gemert, Soufiane Mourragui, Chrysa Papagianni, Hendrik J Kuiken, Sara Mainardi, Daniel Alvarez-Villanueva, Cor Lieftink, Ben Morris, Anna Dekker, Emma van Dijk, Lieke H S Wilms, Marcelo S da Silva, Robin A Jansen, Antonio Mulero-Sanchez, Elke Malzer, August Vidal, Cristina Santos, Ramon Salazar, Rosangela A M Wailemann, Thompson E P Torres, Giulia De Conti, Jonne A Raaijmakers, Petur Snaebjornsson, Shengxian Yuan, Wenxin Qin, John S Kovach, Hugo A Armelin, Hein Te Riele, Alexander van Oudernaarden, Haojie Jin, Roderick L Beijersbergen, Alberto Villanueva, Rene H Medema, Rene Bernards
Cancer homeostasis depends on a balance between activated oncogenic pathways driving tumorigenesis and engagement of stress-response programs that counteract the inherent toxicity of such aberrant signaling. While inhibition of oncogenic signaling pathways has been explored extensively, there is increasing evidence that overactivation of the same pathways can also disrupt cancer homeostasis and cause lethality. We show here that inhibition of Protein Phosphatase 2A (PP2A) hyperactivates multiple oncogenic pathways and engages stress responses in colon cancer cells...
March 27, 2024: Cancer Discovery
https://read.qxmd.com/read/38533706/establishment-of-patient-derived-organoids-for-guiding-personalized-therapies-in-breast-cancer-patients
#14
JOURNAL ARTICLE
Huizi Wu, Weiwei Wang, Yinbin Zhang, Yinxi Chen, Changyou Shan, Jia Li, Yiwei Jia, Chaofan Li, Chong Du, Yifan Cai, Yu Zhang, Shuqun Zhang, Fei Wu
Breast cancer has become the most commonly diagnosed cancer. The intra- and interpatient heterogeneity induced a considerable variation in treatment efficacy. There is an urgent requirement for preclinical models to anticipate the effectiveness of individualized drug responses. Patient-derived organoids (PDOs) can accurately recapitulate the architecture and biological characteristics of the origin tumor, making them a promising model that can overtake many limitations of cell lines and PDXs. However, it is still unclear whether PDOs-based drug testing can benefit breast cancer patients, particularly those with tumor recurrence or treatment resistance...
March 27, 2024: International Journal of Cancer. Journal International du Cancer
https://read.qxmd.com/read/38533566/-fusobacterium-nucleatum-induces-chemoresistance-in-colorectal-cancer-by-inhibiting-pyroptosis-via-the-hippo-pathway
#15
JOURNAL ARTICLE
Ni Wang, Lu Zhang, Xiao-Xu Leng, Yi-Le Xie, Zi-Ran Kang, Li-Cong Zhao, Lin-Hong Song, Cheng-Bei Zhou, Jing-Yuan Fang
Chemotherapy resistance is one of the main reasons for the poor prognosis of colorectal cancer (CRC). Moreover, dysbiosis of gut bacteria was found to be a specific environmental risk factor. In this study, enrichment of F. nucleatum was elucidated to be significantly associated with CRC recurrence after chemotherapy. Functional experiments showed that F. nucleatum could inhibit pyroptosis induced by chemotherapy drugs, thereby inducing chemoresistance. Furthermore, mechanistic investigation demonstrated that F...
2024: Gut Microbes
https://read.qxmd.com/read/38533040/comprehensive-single-cell-analysis-reveals-heterogeneity-of-fibroblast-subpopulations-in-ovarian-cancer-tissue-microenvironment
#16
JOURNAL ARTICLE
Bo Ding, Zheng Ye, Han Yin, Xin-Yi Hong, Song-Wei Feng, Jing-Yun Xu, Yang Shen
BACKGROUND: Ovarian cancer, as a highly malignant tumor, features the critical involvement of tumor-associated fibroblasts in the ovarian cancer tissue microenvironment. However, due to the apparent heterogeneity within fibroblast subpopulations, the specific functions of these subpopulations in the ovarian cancer tissue microenvironment remain insufficiently elucidated. METHODS: In this study, we integrated single-cell sequencing data from 32 ovarian cancer samples derived from four distinct cohorts and 3226 bulk RNA-seq data from GEO and TCGA-OV cohorts...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38532324/-capsicum-annuum-oleoresin-nanoemulgel-design-characterization-and-in-vitro-investigation-of-anticancer-and-antimicrobial-activities
#17
JOURNAL ARTICLE
Ahmad M Eid, Hiba Natsheh, Linda Issa, Majdulin Zoabi, Monia Amer, Effat Mahamid, Ahmed Mousa
BACKGROUND: The use of naturally occurring bioactive materials is getting great attention owing to their safety and environmental properties. Oily compounds, known as oleoresins, are expected to provide an important source for the natural products industry aiming to develop novel treatments for skin conditions. In this work, Capsicum annuum oleoresin nanoemulgel formulations have been prepared and investigated for their antibacterial and anticancer properties. METHODOLOGY: Several C...
2024: Current Pharmaceutical Design
https://read.qxmd.com/read/38532114/sc912-inhibits-ar-v7-activity-in-castration-resistant-prostate-cancer-by-targeting-the-androgen-receptor-n-terminal-domain
#18
JOURNAL ARTICLE
Qianhui Yi, Xiaojun Han, Henry G Yu, Huei-Yu Chen, Dinghong Qiu, Jie Su, Rongtuan Lin, Gerald Batist, Jian Hui Wu
Androgen deprivation therapies (ADT) are the mainstay treatments for castration-resistant prostate cancer (CRPC). ADT suppresses the androgen receptor (AR) signaling by blocking androgen biosynthesis or inhibiting AR with antiandrogens that target AR's ligand-binding domain (LBD). However, the ADT's effect is short-lived, as the AR signaling inevitably arises again, which is frequently coupled with AR-V7 overexpression. AR-V7 is a truncated form of AR that lacks the LBD, thus being constitutively active in the absence of androgens and irresponsive to AR-LBD-targeting inhibitors...
March 26, 2024: Oncogene
https://read.qxmd.com/read/38531808/implementable-assay-for-monitoring-minimum-residual-disease-after-radical-treatment-for-colorectal-cancer
#19
JOURNAL ARTICLE
Takafumi Nakano, Seiichiro Takao, Katsushi Dairaku, Naoki Uno, Siew-Kee Amanda Low, Masahiro Hashimoto, Yasuo Tsuda, Yuichi Hisamatsu, Takeo Toshima, Yusuke Yonemura, Takaaki Masuda, Ken Eto, Toru Ikegami, Yosuke Fukunaga, Atsushi Niida, Satoshi Nagayama, Koshi Mimori
Considering the cost and invasiveness of monitoring postoperative minimal residual disease (MRD) of colorectal cancer (CRC) after adjuvant chemoradiotherapy (ACT), we developed a favorable approach based on methylated circulating tumor DNA to detect MRD after radical resection. Analyzing the public database, we identified the methylated promoter regions of the genes FGD5, GPC6, and MSC. Using digital polymerase chain reaction (dPCR), we termed the "amplicon of methylated sites using a specific enzyme" assay as "AMUSE...
March 26, 2024: Cancer Science
https://read.qxmd.com/read/38531796/dna-methylation-regulated-hoxc8-s-role-in-her2-positive-breast-cancer-function-and-its-contribution-to-herceptin-resistance
#20
JOURNAL ARTICLE
Xiaofeng Xie, Sijia Tang, Zhengyang Yu
BACKGROUND: The epidermal growth factor receptor 2 ( HER2 ) is overexpressed in 30% of breast cancers, and this overexpression is strongly correlated with a poor prognosis. Herceptin is a common treatment for HER2-positive breast cancer; however, cancer cells tend to adapt gradually to the drug, rendering it ineffective. The study revealed an association between the methylation status of the Homeobox C8 ( HOXC8 ) gene and tumor development. Therefore, it is of paramount importance to delve into the interaction between HOXC8 and HER2-positive breast cancer, along with its molecular mechanisms...
March 2024: Discovery Medicine
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