New p53 gene discovery sheds light on how to make cancer therapies more effective

(Virginia Commonwealth University) Scientists at VCU Massey Cancer Center have discovered that the loss of a protein called DBC1 in breast cancer cells leads to the dysregulation of normal anti-cancer functions, contributing to cancer cell growth and resistance to therapies. By restoring the expression of this protein, doctors may be able to help prevent the development of cancer and increase the effectiveness of common cancer treatments.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news

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In this study, we show the ability of U94 to exert its anticancer activity on three different TNBC cell lines by inhibiting DNA damage repair genes, cell cycle and eventually leading to cell death following activation of the intrinsic apoptotic pathway. Interestingly, we found that U94 acted synergistically with DNA-damaging drugs. Overall, we provide evidence that U94 is able to combat tumor cells with different mechanisms, thus attesting for the great potential of this molecule as a multi-target drug in cancer therapy.
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Conclusion.NAC use for BC at these South African hospitals was associated with both tumor characteristics and heterogenous resource constraints.Implications for Practice.Using data from a large breast cancer cohort treated in South Africa's public healthcare system, the authors looked at determinants of neoadjuvant chemotherapy use and time to initiate treatment. It was found that neoadjuvant chemotherapy was associated with increasing tumor burden and aggressive molecular subtypes, demonstrating clinically appropriate care in a lower resource setting. Results of this study also showed that time to treatment differences be...
Source: The Oncologist - Category: Cancer & Oncology Authors: Tags: Breast Cancer, Health Outcomes and Economics of Cancer Care, Global Health and Cancer Source Type: research
ier E Abstract The use of small interfering RNA (siRNA) to regulate oncogenes appears as a promising strategy in the context of cancer therapy, especially if they are vectorized by a smart delivery system. In the present study, we investigated the cellular trafficking of a siRNA nanovector (called CS-MSN) functionalized with the cell-penetrating peptides (CPP) gH625 in a triple negative breast cancer model. With complementary techniques, we showed that siRNA nanovectors were internalized by both clathrin- and caveolae-mediated endocytosis. The presence of gH625 at the surface of the siRNA nanovector did not modify...
Source: Biomacromolecules - Category: Biochemistry Authors: Tags: Biomacromolecules Source Type: research
In this study, we successfully synthesized PEG-Hb nanoparticles loading with PTX based on previously well-established acid-denatured method. PEG-Hb-PTX NPs showed enhanced cellular uptake and great cellular inhibition ability in vitro. Moreover, our animal study showed that PEGylated NPs greatly accumulated in tumor tissues and exhibited excellent anticancer activity in vivo. We found that PEG-Hb-PTX NPs possess a better in vivo antitumor effect than the commercially available Taxol® formulation. We believe that PEG-Hb has great potential as an efficient drug delivery system for further clinic study. PMID: 31293178...
Source: Drug Delivery - Category: Drugs & Pharmacology Tags: Drug Deliv Source Type: research
The mevalonate pathway (also known as the cholesterol biosynthesis pathway) plays a crucial metabolic role in normal cell function as well as in the pathological environment. It leads to the synthesis of sterol and non-sterol isoprenoid biomolecules which subserve a variety of cellular functions. It is known to be deregulated in many disease processes. Statins and bisphosphonates are prominent inhibitors of the mevalonate pathway. They inhibit cell proliferation and activate apoptotic signalling and suppress tumour growth. Statins subdue metastatic spread of tumours by virtue of their ability to suppress invasion and angio...
Source: Current Cancer Therapy Reviews - Category: Cancer & Oncology Source Type: research
Conclusion: Our results revealed that traditional medicinal plants could be an excellent source of natural anticancer agents and the chitosan-extract nanoparticles is a promising formulation strategy to enhance their clinical effectiveness.
Source: Current Cancer Therapy Reviews - Category: Cancer & Oncology Source Type: research
Publication date: November 2019Source: Materials Science and Engineering: C, Volume 104Author(s): Mehdi Abedi, Samira Sadat Abolmaali, Mozhgan Abedanzadeh, Sedigheh Borandeh, Soliman Mohammadi Samani, Ali Mohammad TamaddonAbstractSynthesis of monodisperse carboxylic acid-functionalized magnetic mesoporous silica nanoparticles is performed by either two-step sol-gel process or post-grafting using citric acid modified isocyanate silane coupling agent (MMSN-NCO-CA) or succinic anhydride modified magnetic mesoporous silica (MMSN-NH-SA). Morphology, structure and magnetic properties of bare and mesoporous silica coated Fe3O4 co...
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
In this study, we comparatively determined the in vitro anti-cancer potential of inorganic nanoparticles (NPs) in MDA-MB-231 cancer cells. Flow cytometry, confocal microscopy, and reactive oxygen species (ROS) assays were employed to probe likely mechanism of anti-cancer action of NPs. Study demonstrated dose-dependent toxicity of NPs to MDA-MB-231 cells. The NPs promoted production of ROS and might have caused early apoptotic clearance of MDA-MB-231 cells. Considered together, the findings support anti-cancer potential of inorganic NPs. Furthermore, preliminary evidence suggests that the anti-cancer potential of these NPs...
Source: Comparative Clinical Pathology - Category: Pathology Source Type: research
Conclusions: This cohort study is one of the largest to report characteristics and clinical outcomes of patients referred to a coc. Collaboration between oncologists and cardiologists resulted in completion of cancer therapy in most patients. Ongoing analysis of referral patterns, management plans, and patient outcomes will help to guide the cardiac care of oncology patients, ultimately optimizing cancer and cardiac outcomes alike. PMID: 31285675 [PubMed - in process]
Source: Current Oncology - Category: Cancer & Oncology Tags: Curr Oncol Source Type: research
AbstractOver 70,000 US young adults are diagnosed with cancer annually, disrupting important life transitions and goal pursuits. Hope is a positive psychology construct associated with better quality of life (QOL) that focuses on goal-oriented thinking. We developed and tested Achieving Wellness After Kancer in Early life (AWAKE), a scalable 8-week app-based program consisting of educational videos, mood/activity tracking, and telephone-based coaching to promote hope and QOL in young adult cancer survivors (YACS, 18 –40 years old). A two-arm RCT was used to examine the feasibility, acceptability, and potential e...
Source: Journal of Cancer Education - Category: Cancer & Oncology Source Type: research
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