Carbonate apatite nanoparticles carry siRNA(s) targeting growth factor receptor genes egfr1 and erbb2 to regress mouse breast tumor.

Carbonate apatite nanoparticles carry siRNA(s) targeting growth factor receptor genes egfr1 and erbb2 to regress mouse breast tumor. Drug Deliv. 2017 Nov;24(1):1721-1730 Authors: Tiash S, Kamaruzman NIB, Chowdhury EH Abstract Cancer cells lose their control on cell cycle by numerous genetic and epigenetic alterations. In a tumor, these cells highly express growth factor receptors (GFRs), eliciting growth, and cell division. Among the GFRs, epidermal growth factor receptor-1 (EGFR1) (Her1/ERBB1) and epidermal growth factor receptor-2 (EGFR2) (Her2/ERBB2) from epidermal growth factor (EGF) family and insulin-like growth factor-1 receptor (IGF1R) are highly expressed on breast cancer cells, thus contributing to the aggressive growth and invasiveness, have been focused in this study. Moreover, overexpression of these receptors is related to suppression of cell death and conferring resistance against the classical drugs used to treat cancer nowadays. Therefore, silencing of these GFRs-encoding genes by using selective small interfering RNAs (siRNAs) could be a powerful approach to treat breast cancer. The inorganic pH sensitive carbonate apatite nanoparticles (NPs) were used as a nano-carrier to deliver siRNA(s) against single or multiple GFR genes in breast cancer cells as well as in a mouse model of breast carcinoma. Silencing of egfr1 and erbb2 simultaneously led to a reduction in cell viability with an increase in cell death signal in the cancer cells and ...
Source: Drug Delivery - Category: Drugs & Pharmacology Tags: Drug Deliv Source Type: research

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Late recurrence of estrogen receptor (ER) positive breast cancer is common. When tissues from a recurrent or metastatic focus are available, re-evaluation of ER, progesterone receptor (PgR), and human epidermal growth factor receptor 2 (HER2) status is recommended for treatment selection. This case report describes a 59-year-old woman who underwent surgery for left breast cancer, with a histopathological diagnosis of invasive ductal carcinoma (pathological stage T2N1aM0 Stage IIB, ER positive, PgR positive and HER2 negative). A health check-up 16 years after surgery revealed multiple hepatic mass lesions, and the patient w...
Source: Case Reports in Oncology - Category: Cancer & Oncology Source Type: research
ita Diterpenoid alkaloids are isolated from plants of the genera Aconitum, Delphinium, and Garrya (Ranunculaceae) and classified according to their chemical structures as C18-, C19- or C20-diterpenoid alkaloids. The extreme toxicity of certain compounds, e.g., aconitine, has prompted a thorough investigation of how structural features affect their bioactivities. Therefore, natural diterpenoid alkaloids and semi-synthetic alkaloid derivatives were evaluated for cytotoxic effects against human tumor cells [A549 (lung carcinoma), DU145 (prostate carcinoma), MDA-MB-231 (triple-negative breast cancer), MCF-7 (estrogen recep...
Source: Molecules - Category: Chemistry Authors: Tags: Review Source Type: research
Authors: Goller SS, Markert UR, Fröhlich K Abstract Breast cancer is one of the most common malignancies which appear during pregnancy. Since women are increasingly not giving birth until they are at a more advanced age, it can be assumed that the incidence of pregnancy-related breast cancers will continue to increase in the future. Because of pregnancy-induced changes and conservative diagnosis, these carcinomas are frequently not detected until they are at an advanced stage and thus generally require systemic adjuvant therapy. The available data on optimal chemotherapeutic management are limited. Particularl...
Source: Geburtshilfe und Frauenheilkunde - Category: OBGYN Tags: Geburtshilfe Frauenheilkd Source Type: research
CONCLUSION: This is the first reported Australian experience using neoadjuvant dual anti-HER2 and taxane therapy for HER-2 positive nonmetastatic breast cancer. The authors have demonstrated favorable pCR rates for invasive disease compared to the NEOSPHERE trial (68% vs 46%), with reasonable patient tolerability. Larger collaborative data sets are required to fully evaluate correlation of pCR with survival outcomes, and cost-effectiveness. National funding models need to be considered. PMID: 31218842 [PubMed - as supplied by publisher]
Source: Clinical Genitourinary Cancer - Category: Cancer & Oncology Authors: Tags: Asia Pac J Clin Oncol Source Type: research
AbstractPatients with breast cancer desire to avoid chemotherapy-induced alopecia because it induces mental stress during treatment. Scalp cooling can suppress chemotherapy-induced alopecia without increasing the risk of scalp metastasis; however, in certain cases, alopecia cannot be prevented. The use of properly fitted scalp cooling caps has not yet been explored in Asian patients. Here, we report a case of hair regrowth using a properly fitted scalp cooling cap during adjuvant chemotherapy for breast cancer. A 51-year-old Japanese woman who was recalled by screening mammography for grouped amorphous calcifications and a...
Source: International Cancer Conference Journal - Category: Cancer & Oncology Source Type: research
Conclusion: This translational study identified CXCL5 as a biomarker of efficacy of lysosomotropic drugs, a potential asset for personalized medicine.
Source: Theranostics - Category: Molecular Biology Authors: Tags: Research Paper Source Type: research
CONCLUSIONS: The frequency of 4-1BBL+ B cells significantly increased following a short time activation, and showed relative and significant associations with tumor grade and estrogen receptor status, respectively. More investigations are required to evaluate the potential of 4-1BBL+ B cells for use in immunotherapy. PMID: 31182685 [PubMed - in process]
Source: Iranian Journal of Immunology - Category: Allergy & Immunology Tags: Iran J Immunol Source Type: research
BREAST CANCER IN YOUNG WOMEN: PATHOLOGIC AND IMMUNOHISTOCHEMICAL FEATURES. Acta Clin Croat. 2018 Sep;57(3):497-502 Authors: Erić I, Petek Erić A, Kristek J, Koprivčić I, Babić M Abstract - A young woman with breast cancer is considered to be a woman younger than 40. According to the literature, breast cancer in the population of young women usually is of a higher histologic grade, unfavorable hormonal status, and overall higher mortality rate when compared with breast cancer occurring in older population. We compared pathologic and immunohistochemical features of breast carcinoma in women under 40...
Source: Acta Clinica Croatica - Category: General Medicine Tags: Acta Clin Croat Source Type: research
Conditions:   Anatomic Stage I Breast Cancer AJCC v8;   Anatomic Stage IA Breast Cancer AJCC v8;   Anatomic Stage IB Breast Cancer AJCC v8;   Anatomic Stage II Breast Cancer AJCC v8;   Anatomic Stage IIA Breast Cancer AJCC v8;   Anatomic Stage IIB Breast Cancer AJCC v8 ;   Anatomic Stage III Breast Cancer AJCC v8;   Anatomic Stage IIIA Breast Cancer AJC...
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
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