Background: GATA binding protein 3 (GATA3) and miR-29b associated with colorectal cancer (CRC). The current study explored the relationship between GATA3 and regulation of miR-29b, and the mechanism of drug resistance two in CRC cells to oxaliplatin.
Methods: Apoptosis CRC cells caused by oxaliplatin in various doses was detected by flow cytometry. CRC cells separately transfected with excess and knockdown of GATA3, agomir miR-29b and antagomir, and treated by oxaliplatin for the detection of cell viability and apoptosis by cell couting Kit-8 (CCK-8) and flow cytometry. The expression levels of GATA3, caspase3 and cleaved caspase3 determined by Western blot, and the expression of miR-29b was detected by real-time quantitative polymerase chain reaction (qRT-PCR). animal experiments were conducted to test the changes of transplanted tumor xenografts in nude mice studies and observed by in vivo imaging. TUNEL staining performed to detect apoptosis of tumor cells.
Results: Both GATA3 and miR-29b agomir CRC inhibit the activity of cells, apoptosis is promoted and Cleaved caspase3 expression, and reduces cell resistance to chemotherapy drug oxaliplatin. Although GATA3 can up-regulate the expression of miR-29b, a tumor-suppression effects of GATA3 partially reversed by miR-29b antagomir. In vivo experiments showed that down-regulates expression of GATA3 promoted and the growth rate of transplanted tumor volume, while expressing GATA3 no significant effect on tumor growth. TUNEL staining results showed that knock down or overexpression of GATA3 not cause significant changes in the body of CRC cell apoptosis, while oxaliplatin treatment increases the number of apoptotic bodies.
Conclusion: GATA3 inhibit cell survival of CRC cells, promote apoptosis, and reduce oxaliplatin resistance of CRC cells through regulate miR-29b.
Overexpressed GATA3 enhances the sensitivity of colorectal cancer cells to oxaliplatin through regulating MiR-29b
Chloroquine Overcome Imatinib Resistance Combined with Imatinib in Gastrointestinal Stromal Tumors by Inhibiting Autophagy through the MAPK / ERK Pathway
Background: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract. However, up to 40-50% of GISTs develop secondary resistance after a median of 24 months of imatinib treatment. It has been reported that autophagy can promote cell survival and induces drug resistance GIST. Currently, the specific mechanism of autophagy in GISTs with imatinib resistance is not clear.
Materials and Methods: Cell-counting kit (CCK) -8 and flow cytometry method used for in vitro drug sensitivity testing and detection levels of autophagy. The detection rate of apoptosis is by flow cytometry with annexin V Kit. Western blotting was used to analyze the role of autophagy and apoptosis in GIST cells with CQ alone, imatinib alone, or in combination, and to analyze the expression of MAPK pathway.
In vitro results were confirmed by in vivo experiments using mouse models. Hematoxylin and eosin and immunohistochemical staining is used to detect pathological characteristics and immunophenotype transplanted tumor. Detection of KIT and PDGFRA gene mutations in imatinib-resistant GIST transplant performed by denaturing high-performance liquid chromatography (DHPLC) and direct sequencing. ERK and KIT expression and regulation of the level detected by Western blotting.
Description: A competitive ELISA for quantitative measurement of Rat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Rat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Rat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Rat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Canine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Canine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Canine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Canine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Canine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Canine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Porcine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Porcine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Porcine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Porcine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Porcine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Porcine Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Goat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Goat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Goat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Goat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Goat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Goat Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Mouse Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Mouse Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Mouse Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Human Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Human Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Human Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Mouse Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Mouse Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Mouse Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Rabbit Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Rabbit Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Rabbit Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rabbit Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rabbit Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Rabbit Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Monkey Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Monkey Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Monkey Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Monkey Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Monkey Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A Sandwich ELISA for quantitative measurement of Monkey Collagen Type IV in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of for Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of for Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of for Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of for Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: Enzyme-linked immunosorbent assay based on the Double-antibody Sandwich method for detection of Collagen Type IV (COL4) in samples from serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids with no significant corss-reactivity with analogues from other species.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Rat Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Rat Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Rat Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Rat Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: Enzyme-linked immunosorbent assay based on the Double-antibody Sandwich method for detection of Rat Collagen Type IV (COL4) in samples from serum, plasma, tissue homogenates and other biological fluids with no significant corss-reactivity with analogues from other species.
Description: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Rat COL4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rat COL4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Rat COL4, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Rat COL4 in the samples is then determined by comparing the OD of the samples to the standard curve.
Description: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Rat COL4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rat COL4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Rat COL4, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Rat COL4 in the samples is then determined by comparing the OD of the samples to the standard curve.
Description: This is Double-antibody Sandwich Chemiluminescent immunoassay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: This is Double-antibody Sandwich Chemiluminescent immunoassay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: This is Double-antibody Sandwich Chemiluminescent immunoassay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: This is Double-antibody Sandwich Chemiluminescent immunoassay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates and other biological fluids.
Description: Double-antibody Sandwich chemiluminescent immunoassay for detection of Human Collagen Type IV (COL4)Serum, plasma, tissue homogenates and other biological fluids
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Human Collagen Type IV (COL4) in serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Description: Enzyme-linked immunosorbent assay based on the Double-antibody Sandwich method for detection of Human Collagen Type IV (COL4) in samples from serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids with no significant corss-reactivity with analogues from other species.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Mouse Collagen Type IV (COL4) in serum, plasma and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Mouse Collagen Type IV (COL4) in serum, plasma and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Mouse Collagen Type IV (COL4) in serum, plasma and other biological fluids.
Description: This is Double-antibody Sandwich Enzyme-linked immunosorbent assay for detection of Mouse Collagen Type IV (COL4) in serum, plasma and other biological fluids.
Description: Enzyme-linked immunosorbent assay based on the Double-antibody Sandwich method for detection of Mouse Collagen Type IV (COL4) in samples from serum, plasma and other biological fluids with no significant corss-reactivity with analogues from other species.
Description: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Mouse COL4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Mouse COL4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Mouse COL4, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Mouse COL4 in the samples is then determined by comparing the OD of the samples to the standard curve.
Description: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Mouse COL4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Mouse COL4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Mouse COL4, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Mouse COL4 in the samples is then determined by comparing the OD of the samples to the standard curve.
Description: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human COL4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human COL4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human COL4, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human COL4 in the samples is then determined by comparing the OD of the samples to the standard curve.
Description: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human COL4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human COL4. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human COL4, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human COL4 in the samples is then determined by comparing the OD of the samples to the standard curve.
Results: In vitro and in vivo experiments, the level of imatinib-resistant cell autophagy higher than normal cells; CQ combined with imatinib may promote apoptosis by blocking the imatinib-resistant cell autophagy. Meanwhile, we found that the levels of ERK phosphorylation may be associated with autophagy.
Gina
