There are thousands of kidney transplants done a year in the United States. However, after transplantation, the patient’s immune system will see the new kidney as an invader and attack it. To counteract this phenomenon, physicians prescribe immunosuppressants. Although immunosuppressants are necessary for the body to accept the new kidney, many side effects of these medications have been established, with many of these effects being specifically harmful to the kidneys, so the question that needs to be answered is how do we ensure the long-term survival of renal transplant patients? Dr. Bai’s research focused specifically on the immunosuppressant Cyclosporine A (CsA). In the body, CsA’s specific target is Calcineurin A (CnA), which plays an …show more content…
In order to test her hypothesis, Dr. Bai had three different types of mice cell cultures: renal fibroblast cells from mice knocked out for the alpha isoform, renal fibroblast cells from mice knocked out for the beta isoform, and wild type mice cells. First, she wanted to detect the MMP-9 concentration in cells, so she treated the three cell types with CsA and performed a western blot. These results showed that basal levels of intracellular MMP-9 is similar in all the fibroblasts cells, and in the beta isoform knock out mice, there were increased CsA-induced MMP-9 protein levels in comparison to the basal levels.
Next, Dr. Bai investigated the extracellular mechanism of MMP-9, so she took the same cultures as before, treated them with CsA, collected the supernatant, and performed the MMP-9 ELISA, which detects and measures the protein concentration in a biological cell. They saw that the alpha knockout cells, without any treatment, had significantly higher MMP-9 secretion compared to wild type and beta-knockout mice, and when treated with CsA, all of the different cultures saw an increase in MMP-9 levels. Subsequently, Dr. Bai used the EnzChek Gelatinase Assay in order to measure the activity of MMP-9 in renal fibroblasts before and after CsA treatment. Here, she saw that the alpha knockout cells had much higher MMP-9 activities than the wild type and beta isoform cells. In
The maximum cell density of the naked mole rat cells was found to be three times lower than the mouse sample. This result shows that naked mole-rat cells are hypersensitive to contact inhibition, also known as early contact inhibition. Researchers attempted to determine whether this early contact inhibition was caused by cell contact or secreted factors by replacing the media of naked mole-rat fibroblasts. The replacement increased the maximum cell density but not enough to reach the same level as the mouse sample showing that contact is the cause of the contact inhibition. Naked mole-rat and mouse fibroblasts were infected with oncoproteins which disable Rb and p53 in different samples to determine their role in early contact inhibition. The results showed that both Rb and p53 both played a role in preventing cell proliferation but Rb is more important in the regulation of early contact inhibition. Naked mole-rat fibroblasts were compared to human, mouse and a mutated naked mole-rat fibroblast without early contact inhibition by analyzing for p27 using Western blot. The naked mole-rat sample was the only sample that expressed little p27. When the same process was repeated for p16, the naked mole-rat sample was the only sample expressing high levels of p16. This result shows how p16 is the early contact inhibitor in the naked mole rat and p27 serves as a backup. GFP
The cells were washed with PBS and then incubated in serum-free media and treated with 2.5 μM of free sorafenib or an equivalent sorafenib concentration of SMA-Sor, 3 μM of free nilotinib or an equivalent nilotinib concentration of SMA-Nilo, DMSO or SMA for 48 h. Following treatment, media was collected, centrifuged to remove cell debris, and freeze-dried for 12 h. Samples were rehydrated and mixed with loading buffer (0.4 M Tris, pH 6.8, 5% SDS, 20% glycerol, 0.03% bromophenol blue). For zymography, samples were loaded on a 10% SDS-polyacrylamide gel containing 1 mg/mL of gelatin. After electrophoresis, the gels were incubated in renaturing solution (2.5% Triton-X-100 (w/v)) for 30 min at room temperature and then for 24 h at 37°C in a developing buffer containing 50 mM Tris, pH 7.5, 200 mM NaCl, 4 mM CaCl2, and 0.02% NP40. The gels were then stained with Coomassie blue R250, and regions without staining were indicative of gelatin lysis. The gels were briefly rinsed and scanned. For MMP-9 and isthmin-1 secretion, samples were loaded on a 10% SDS-polyacrylamide gel, and the expression of MMP-9 and isthmin-1 assessed by western blotting using anti-MMP-9 (D6O3H, Cell Signaling) and anti-isminth-1 antibodies (Biorbyt, San Francisco, CA,
When TGase was knocked down, the HPT cells stared to migrate out of the tissue. The effect of extracellular of TGase activity was decreased in HPT culture with crude astakine supplementation (8). This studies strongly suggest that TGase activity is important for extracellular matrix (ECM) stabilization and decrease of its extracellular activity is mediated the hemocyte releasing from HPT. However, the role of astakine1 in TGase regulation still unclear. In crayfish, in addition to collagen IV (9), HPT tissue contains an abundant of clotting protein (unpublished data), which known as noncollagenous TGase substrate. This suggested that collagen and/or clotting may be involved in HPT cell renewal. In osteoblast, TGase activity has been reported to be an essential for an initial formation of a fibronectin-collagen network which subsequent affects to cell differentiation and mineralization of the cultures (10). In addition, 5-HT, a monoamine with a variety of physiological function as well as regulation of bone mass, has been determined to be an inhibitor of FXIIIa. 5-HT treatment resulted in directly inhibit FXIIIa mediate crosslinking of plasma fibronectin and leads to decreasing the stabilization of extracellular matrix networks (11).
Kidney disease has become more prevalent over the years, one in nine Americans has chronic kidney disease, resulting in the need for a kidney transplant. Kidney failure is caused by variety of factors resulting in damage of the nephrons, which are the most important functioning unit of the kidneys. Kidney failure can be broken down into three groups: acute, chronic, end-stage. Once kidney failure is irreversible, dialysis or transplantation is the only method of survival. To avoid a kidney transplant, one needs to be aware of the pre-disposing factors, signs and symptoms, available treatments, and proper diet.
MMP-9 is a matrixin, a class of enzymes that belong to the zinc-metalloproteinases family involved in the degradation of the extracellular matrix and have an important role in cancer progression. VEGF is a protein produced by cells that stimulates angiogenesis. It restores the oxygen supply to cells when blood circulation is inadequate and also similar to MMP-9 causes to cancer
Mice are frequently used to study the molecular mechanisms behind IPC induced renal protection. Apparently, IPC is more effective
As mentioned before, TRPML1 is the transient receptor protein affected by the mutation that causes MLIV. The TRP gene family are not yet well characterized, but are known to localize in late endosomes and have associations with lysosomes. It is required for proper and efficient fusion of late endosomes and autophagosomes with lysosomes (6). There were debates regarding what sort of channel TRMPL1 was, with some stating that it was a proton channel rather than an ion channel (2). However, it seems widely accepted that it is an ion channel capable permeable to ions such as Ca2+ and Fe2+. There has also been recent research that further support TRPML1 as an ion channel. Regardless, the precise role of TRPML1 is largely
Cancer metastasis in the main character and hallmark of cancer progression [6]. Metastasis is a multi-step process beginning from detachments of cancer cells from the primary tumor, disruption of the basement membrane for invading to surrounding tissue. Subsequently, the cancer cells able entry to the blood and lymphatic system to spread into other part of the body and extravasation for growth and proliferate in distant sites [7]. Matrix metalloproteinase (MMP) is a zinc-dependent endopeptidase which responsible in degradation the component of extracellular matrix (ECM) proteins including collagen, elastin, fibronectin. MMP can secrete by inflammatory cells, osteoblast, fibroblast, and also cancer cells. MMP has a pivotal role in promoting
In recent studies, MCF-7 cells have been studied to find what chemical agents cause the cells to proliferate
Sample preparation: purified protein and cell lysate have been already and denatured in Laemmli sample buffer and are in His-tagged DHFR, GST-tagged DHFR, Myc-Flag-tagged DHFR aliquots. Control lysate is provided by TA. Wear goggles before to hreat samples for 2 minutes at 95˚C. Centrifuge samples and load gel at room temperature. Obtain an aliquot of the each of the following: 1X Laemmli buffer and Kaleidoscope prestained protein standard (Bio-Rad
We grew HLMVEC to confluency, changed to 2% media and added either control or 100 ng/ml C1INH one hour prior to the addition of control, 100 ng/ml purified endothelial HABP2, 1 ug/ml LPS or 100 nM LMW-HA (which we have previously demonstrated can activate HABP2 protease activity (36)) for 15 minutes. Cells were solublized and the ratio of pSer536 p65 NF-kB to total p65 NF-kB was quantitated using an ELISA kit (Abcam). Figure 2-A indicates that preincubation with C1INH inhibited HABP2, LPS and LMW-HA-mediated NF-kB activation. LMW-HA was inhibited the least likely due to the fact that it can also bind CD44v10 and TLR4 (41). We and others have previously shown that HABP2, LPS and LMW-HA can activate the small G protein, RhoA, in EC (36, 39, 41-44). Using the same experimental setup at Figure 2-A, Figure 2-B indicates that preincubation with C1INH inhibited HABP2, LPS and LMW-HA-mediated RhoA activation. LMW-HA was inhibited the least likely due to reasons stated above. Finally, Figure 2-C indicates that C1INH moderates EC barrier function. Specifically, pretreatment of HPMVEC monolayers with C1INH (100 ng/ml, 1 hour) attenuated LPS, LWM-HA and purified HABP2-mediated EC barrier disruption while slightly (but significantly) augmenting HMW-HA-mediated EC barrier enhancement.
# Blood and liver samples were taken from the mice for testing. The liver was tested for substrate concentration, the serum was separated from the blood with the use of a centrifuge. The experiment tested both male and female mice, each with a control, condition and competition. Each of these was assessed in triplicate(groups of
A standard curve can be produced after measuring the absorbance of roughly seven standard dilutions containing concentrations between 3200 pg/ml and 50 pg/ml of recombinant SMN. We can compare the SMN ELISA results from the different PMBCs obtained from the mice treated using CRIPSR-Cas9 and that of the control (untreated mice) [Wirth,
3.2 IDUA enzyme activity increase in tissues of treated MPS I mice after 8 weekly infusions of IDUAL
He deceived her and she sold her kidney. “I Sold My Kidney for Love” is a story in a book named The Black Book of Arabia by Sheikah Hend Al Qassemi. The story started off with a young Yemeni girl who fell in love with a man named Adnan he was everything she wanted. They planned to get married after graduating from university, but Adnan was a poor man he didn’t have enough money to marry the girl who loved him so much. At one point Adnan thought of an idea it was selling a kidney and get the money, the girl thought of the idea deeply and she told Adnan she will sell her kidney as well as she will give him the money so he can come and propose to her and they get married. However, Adnan never kept a promise about