Beta-carotene-bound albumin nanoparticles modified with chlorin e6 for breast tumor ablation based on photodynamic therapy

Publication date: Available online 10 July 2018Source: Colloids and Surfaces B: BiointerfacesAuthor(s): Pham Thi Thu Phuong, Sungin Lee, Changkyu Lee, Bohyung Seo, Sanghyun Park, Kyung Taek Oh, Eun Seong Lee, Han-Gon Choi, Beom Soo Shin, Yu Seok YounAbstractChlorin e6 (Ce6) has attracted considerable interest as a promising second-generation photosensitizer for photodynamic therapy (PDT). However, the in vivo availability of Ce6 is significantly restricted by its low water solubility and poor ability to target tumors. We sought to overcome the limitations of Ce6 by using albumin nanoparticles with nabTM (nanoparticle albumin-bound) technology. The fabricated albumin nanoparticles consisted of bovine serum albumin (BSA), Ce6-BSA, and beta-carotene as a carrier, photosensitizing agent, and cross-linker, respectively. These albumin nanoparticles (Ce6-BSA-BC-NPs) did not include any toxic chemotherapeutics but instead contained naturally safe beta-carotene and Ce6, which was activated only upon irradiation with 660-nm laser light. Ce6-BSA-BC-NPs were ~120 nm in size and spherical, similar to Abraxane®, and showed good physicochemical stability. The nanoparticles showed significant cytotoxicity toward 4T1 cells as evaluated by MTT, Live/Dead, and TUNEL assays. In particular, results of the TUNEL assay demonstrated that cell death induced by Ce6-BSA-BC-NPs and light irradiation (660 nm) occurred through the apoptotic pathway. Ce6-BSA-BC-NPs displayed a remarkably enhanced t...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research

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CONCLUSION: Observational studies suggest some degree of association between serum hormones measured in pregnancy and a woman's future risk of breast and ovarian cancer. More data are needed to determine sufficiently whether certain blood hormone levels measured in pregnancy are predictive of future cancer risk. PMID: 30528445 [PubMed - as supplied by publisher]
Source: Journal of Obstetrics and Gynaecology Canada : JOGC - Category: OBGYN Tags: J Obstet Gynaecol Can Source Type: research
This study was conducted on 300 patients with infiltrative breast carcinoma, of which 112 cases underwent radical mastectomy, and 188 were conservatively operated. Forty-four patients experienced local relapses during the clinical follow-up. The immunohistochemical (IHC) study used the Labeled Streptavidin Biotin (LSAB)∕Horseradish peroxidase (HRP) method, which evaluated the estrogen receptor (ER) and progesterone receptor (PR), as well as human epidermal growth factor receptor 2 (Her2∕neu) expressions in tumor cells. After IHC analysis, all cases were classified into one of the following four immunophenotypes: ER+∕...
Source: Romanian Journal of Morphology and Embryology - Category: General Medicine Tags: Rom J Morphol Embryol Source Type: research
Young breast cancer survivors (YBCS) have unmet needs for managing hot flashes, fertility-related concerns, sexual health and contraception.
Source: Contemporary Clinical Trials - Category: Radiology Authors: Source Type: research
CONCLUSIONS: Our preliminary data demonstrate that ozone therapy is a valid supportive therapy for fatigue in cancer patients, both during cancer therapy and in a palliative setting with no significant side effects. PMID: 30536352 [PubMed - in process]
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
CONCLUSIONS: SNHG7 is highly expressed in BC, which is correlated to tumor stage, lymph node metastasis and distant metastasis of BC patients. SNHG7 could promote malignant progression of BC by regulating microRNA-186. PMID: 30536320 [PubMed - in process]
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
Authors: Liu ZY, Yang L, Chang HY Abstract OBJECTIVE: MicroRNAs (miRNAs) as a new class of biomarkers have been explored in recent studies. We investigate whether miR-1256 could be considered as powerful biomarkers for predicting the prognosis of colorectal cancer (CRC). PATIENTS AND METHODS: The expression of miR-1256 in CRC was compared with matched normal tissue and using qRT-PCR. The correlation of miR-1256 expression with clinicopathological factors was statistically analyzed. Survival rate was determined with Kaplan-Meier and statistically analyzed with the log-rank method between groups. Univariate and m...
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
New research suggests women who bear children are more susceptible to breast cancer than women who do not. Dr. Lauren Cassell, chief of breast surgery at Lenox Hospital in New York City, joins CBSN to discuss the new study.
Source: Health News: - Category: Consumer Health News Source Type: news
Abstract Background: In recent decades, snake venom disintegrins have received special attention due to their potential use in anticancer therapy. Disintegrins are small and cysteine-rich proteins present in snake venoms and can interact with specific integrins to inhibit their activities in cell-cell and cell-ECM interactions. These molecules, known to inhibit platelet aggregation, are also capable of interacting with certain cancer-related integrins, and may interfere in important processes involved in carcinogenesis. Therefore, disintegrin from Crotalus durissus collilineatus venom was isolated, structurally characteriz...
Source: Journal of Venomous Animals and Toxins including Tropical Diseases - Category: Tropical Medicine Source Type: research
We report for the first time a PARP1-targeting PROTAC small molecule to selectively induce the cleavage of PARP1. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Chem. Commun. latest articles - Category: Chemistry Authors: Source Type: research
Conclusion: We did not observe a positive association between the use of 5ARIs and MBC. The small number of breast cancer cases exposed to 5ARIs and the lack of an association in our study suggest that the development of breast cancer should not influence the prescribing of 5ARIs therapy.
Source: International Braz J Urol - Category: Urology & Nephrology Source Type: research
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