Abstract P3-04-15: The PI3K-inhibitor, copanlisib, has selective activity in luminal breast cancer cell lines and shows robust combined activity with hormonal blockade and CDK-4/6 inhibition in ER+ breast cancer cell line xenografts

Author(s):  
NA O'Brien ◽  
D Conklin ◽  
T Luo ◽  
R Ayala ◽  
S Issakhanian ◽  
...  
2021 ◽  
Author(s):  
Maryana Teufelsbauer ◽  
Clemens Lang ◽  
Adelina Plangger ◽  
barbara Rath ◽  
Doris Moser ◽  
...  

Abstract Metformin is used to treat patients with diabetes mellitus and that was found to lower the incidence of cancer. The present study investigated the effects of metformin on human bone-derived mesenchymal stromal cells (BM-MSC) and their breast cancer cell line interactions. BM-MSCs were tested for growth stimulation and migration controlling activity on four breast cancer cell lines employing MTT tests, migration scratch tests and assays of the expression of adipokines in Western Blot arrays. Compared to breast cancer cell lines, metformin significantly inhibited the proliferation of BM-MSC lines. Pretreatment of BM-MSCs with metformin showed variable effects on breast cancer cell lines depending on the specific BM-MSC cancer line combination. Metformin significantly impaired the migration of MDA-MB-231 and MDA-MB-436 in response to conditioned media (CM) of drug pretreated BM-MSCs. Metformin-induced alterations of adipokines by BM-MSC CM indicated increased osteogenic signaling and possibly impairment of metastasis. The anticancer activities of metformin seem to be the result of direct and indirect mechanisms. A lower metformin-induced protumor activity of BM-MSCs in the bone microenvironment seem to contribute to the anticancer effects of this drug in breast cancer patients.


2021 ◽  
Author(s):  
Maryana Teufelsbauer ◽  
Clemens Lang ◽  
Adelina Plangger ◽  
Barbara Rath ◽  
Doris Moser ◽  
...  

Abstract Metformin is used to treat patients with type 2 diabetes mellitus and was found to lower the incidence of cancer. Bone metastasis is a common complication of advanced breast cancer. The present study investigated the effects of metformin on human bone-derived mesenchymal stromal cells (BM-MSC) – breast cancer cell line interactions. BM-MSCs grown from box chisels were tested for growth-stimulating and migration-controlling activity on four breast cancer cell lines either untreated or after pretreatment with metformin. Growth stimulation was tested in MTT tests and migration in scratch assays. Furthermore, the expression of adipokines of BM-MSCs in response to metformin was assessed using Western blot arrays. Compared to breast cancer cell lines (3.6 ± 1.4% reduction of proliferation), 500 µM metformin significantly inhibited the proliferation of BM-MSC lines (12.3 ± 2.2 reduction). Pretreatment of BM-MSCs with metformin showed variable effects of the resulting conditioned media (CM) on breast cancer cell lines depending on the specific BM-MSC –cancer line combination. Metformin significantly impaired the migration of breast cancer cell lines MDA-MB-231 and MDA-MB-436 in response to CM of drug-pretreated BM-MSCs. Assessment of metformin-induced alterations in expression of adipokines by BM-MSC CM indicated increased osteogenic signaling and possibly impairment of metastasis. In conclusion, the anticancer activities of metformin are the result of a range of direct and indirect mechanisms that lower tumor proliferation and progression. A lower metformin-induced protumor activity of BM-MSCs in the bone microenvironment seem to contribute to the positive effects of the drug in selected breast cancer patients.


ALCHEMY ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Roihatul Mutiah ◽  
Sukardiman Sukardiman ◽  
Aty Widyawaruyanti ◽  
Siti Zulaikah

<p>This research aims to find out the anticancer activity of ethanol extract from the roots, leaves, and flowers of <em>Calotropis gigantea</em>. This experiment was conducted by MTT method on T47D breast cancer cell line. The result showed that the root of <em>Calotropis gigantea</em> was more cytotoxic (IC<sub>50</sub> 89.76 μg/mL) on T47D breast cancer cell line than the leaves (IC<sub>50</sub> 459.51 μg/mL) and the flowers (IC<sub>50</sub>&gt;1000). Based on the result, roots are potent to be chemotherapeutic agent, especially in breast cancer.</p>


RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 101415-101429 ◽  
Author(s):  
Pooja Ghosh ◽  
Sudipta Bag ◽  
Atanu Singha Roy ◽  
Elavarasan Subramani ◽  
Koel Chaudhury ◽  
...  

Mor-HSA-NPs and EC-HSA-NPs are effective on MDA-MB-468 breast cancer cell lines.


Molekul ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 34
Author(s):  
Retno Aliyatul Fikroh ◽  
Sabirin Matsjeh ◽  
Chairil Anwar

Breast cancer is one of cancer causes of death in woman. Chemotherapy is one cancer treatment give toxic effects on normal cells. Alternative of cancer treatment by using flavonoid derivative have potent anticancer to reduce side effects of cancer. Chalcone is family of flavonoid that have biological activity. Chalcone derivatives have potential compound as anticancer agent. Chalcone with the presence halogen, metoxy group in ring B is know to inhibit cancer cells. The aims of this research were to synthesize chalcone derivate with bromo, methoxy, and hyroxy group in ring chalcone and to determine the anticancer activity of chalcone derivative. The chalcone derivative was synthesized from 2-hydroxyacetophenone with 2-bromo-4,5-dimethoxybenzaldehyde by Claisen-Schmidt reaction. In vitro cytotoxicity against breast cancer cell was tested by MTT assay method. The compound of 2’-hydroxy-2-bromo-4,5-dimethoxychalcone was yield in 78% as yellow solid. The IC50 of 2’-hydroxy-2-bromo-4,5-dimethoxychalcone was 42,19 µg/mL as a moderate activity to inhibiting breast cancer cell line. Cytotoxity of docorubicin againts breast cancer cell line more active than 2’-hydroxy-2-bromo-4,5-dimethoxychalcone with IC50 10,61 µg/mL. Doxorubicin as drug standar had better anticancer activity than 2’-hydroxy-2-bromo-4,5-dimethoxychalcone. Based on the IC50 value, the compound 2’-hydroxy-2-bromo-4,5-dimethoxychalcone has a moderate activity towards breast cancer cell lines. This study can recommend as candidate for anticancer againts breast cancer cell lines.


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