The molecular mechanism we propose deserves further elucidation a

The molecular mechanism we propose deserves further elucidation and may provide insights valuable to the development of new therapeutic strategies for BA and other cholangiopathies complicated by fibrosis. The authors thank Dr. Chen-Yong Lin, Department of Biochemistry and Molecular find more Biology, University of Maryland, for providing anti-HAI-1 and anti-matriptase antibodies; Dr. Yen-Hsuan Ni for providing study materials; Dr. Hsuan-Shu Lee and Dr. Wei-Hsuan Yu for providing rat stellate cells; Dr. Jun-Tai Wu for confocal microscopy techniques; Dr. Hurng-Yi Wang for statistics consultation; Dr. Shu-Wha Lin

for providing animal experimental facilities, the National RNAi Core Facility in Academia Sinica (NSC 97-3112-B-001-016) for lentiviral shRNA clones; Dr. Ming-Jer Tsai for critical advice; and Dr. Michael D. Johnson, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, for editing. Additional Supporting Information may be found in the online version of this article. “
“Scintigraphy Romidepsin is a useful noninvasive technique for assessment of gastric motility, especially emptying, but there is little knowledge of use of the technique to assess gastric accommodation.

Therefore, to clarify the usefulness of scintigraphy as a technique for assessing gastric accommodation, we compared scintigraphy with barostat, the gold standard modality. Twenty healthy volunteers (14 men, six women; mean age, 28.5 ± 5.4 years) were enrolled in the study. 上海皓元医药股份有限公司 The volunteers ingested a radiolabeled (99mTc) test meal and scintigraphic images were recorded. Radioactivity in the upper third and whole stomach was calculated to evaluate accommodation. In the barostat procedure, gastric accommodation was evaluated by measuring the maximum volume of the distended

balloon. Thereafter, correlation between scintigraphic and barostat accommodation was investigated. Intra-and inter-observer variation of the scintigraphic test results were also assessed. Finally, the diagnostic performance of scintigraphy was evaluated by using sumatriptan as a positive control. Measurements of accommodation by scintigraphy and barostat correlated (r = 0.524, P < 0.05). Sumatriptan significantly increased scintigraphically measured gastric accommodation (with sumatriptan, 51.5 ± 16.4%; without sumatriptan, 38.4 ± 13.8%) (P < 0.01), and had significantly (P < 0.05) delayed 50% half emptying time at 60, 90, 120, and 150 min after the start of the experiment. The data from repeated scintigraphic tests were highly reproducible (r = 0.804) with significant differences not observed among the investigators (inter-observer variation = 0.932, intra-observer variation = 0.898). Gastric scintigraphy is a useful technique for assessing gastric accommodation and emptying. "
“Older age has been widely believed to be associated with a poor prognosis of acute liver failure.

The molecular mechanism we propose deserves further elucidation a

The molecular mechanism we propose deserves further elucidation and may provide insights valuable to the development of new therapeutic strategies for BA and other cholangiopathies complicated by fibrosis. The authors thank Dr. Chen-Yong Lin, Department of Biochemistry and Molecular Selleckchem Pifithrin�� Biology, University of Maryland, for providing anti-HAI-1 and anti-matriptase antibodies; Dr. Yen-Hsuan Ni for providing study materials; Dr. Hsuan-Shu Lee and Dr. Wei-Hsuan Yu for providing rat stellate cells; Dr. Jun-Tai Wu for confocal microscopy techniques; Dr. Hurng-Yi Wang for statistics consultation; Dr. Shu-Wha Lin

for providing animal experimental facilities, the National RNAi Core Facility in Academia Sinica (NSC 97-3112-B-001-016) for lentiviral shRNA clones; Dr. Ming-Jer Tsai for critical advice; and Dr. Michael D. Johnson, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, for editing. Additional Supporting Information may be found in the online version of this article. “
“Scintigraphy LY2157299 ic50 is a useful noninvasive technique for assessment of gastric motility, especially emptying, but there is little knowledge of use of the technique to assess gastric accommodation.

Therefore, to clarify the usefulness of scintigraphy as a technique for assessing gastric accommodation, we compared scintigraphy with barostat, the gold standard modality. Twenty healthy volunteers (14 men, six women; mean age, 28.5 ± 5.4 years) were enrolled in the study. 上海皓元医药股份有限公司 The volunteers ingested a radiolabeled (99mTc) test meal and scintigraphic images were recorded. Radioactivity in the upper third and whole stomach was calculated to evaluate accommodation. In the barostat procedure, gastric accommodation was evaluated by measuring the maximum volume of the distended

balloon. Thereafter, correlation between scintigraphic and barostat accommodation was investigated. Intra-and inter-observer variation of the scintigraphic test results were also assessed. Finally, the diagnostic performance of scintigraphy was evaluated by using sumatriptan as a positive control. Measurements of accommodation by scintigraphy and barostat correlated (r = 0.524, P < 0.05). Sumatriptan significantly increased scintigraphically measured gastric accommodation (with sumatriptan, 51.5 ± 16.4%; without sumatriptan, 38.4 ± 13.8%) (P < 0.01), and had significantly (P < 0.05) delayed 50% half emptying time at 60, 90, 120, and 150 min after the start of the experiment. The data from repeated scintigraphic tests were highly reproducible (r = 0.804) with significant differences not observed among the investigators (inter-observer variation = 0.932, intra-observer variation = 0.898). Gastric scintigraphy is a useful technique for assessing gastric accommodation and emptying. "
“Older age has been widely believed to be associated with a poor prognosis of acute liver failure.

Cloning and sequencing of the 549-bp RT-PCR amplicon of the helic

Cloning and sequencing of the 549-bp RT-PCR amplicon of the helicase domain from grapevine cv. Shiraz lead to the detection of a variant of GLRaV-3, which shared only 69.6–74.1% nt similarity with other variants, including the recently reported, new, highly divergent variant, isolate 139. This was confirmed by the results of the analysis of 517-bp amplicon of the HSP70 gene of GLRaV-3 generated in RT-nested PCR based on degenerate primers for the MG-132 order simultaneous amplification of members

of the Closteroviridae family designed by Dovas and Katis (J Virol Methods, 109, 2003, 217). In this genomic region, the variant shares 72.3–78.7% nt similarity with other variants of GLRaV-3. click here This previously unreported, new, highly divergent variant was provisionally named GTG10. From the alignment of the HSP70 sequences primers for the specific RT-nested PCR amplification of the variant GTG10 and members of group VI, and specific simultaneous amplification of variants of groups I, II and III, were designed. The results obtained from brief testing of various grapevines using all these primers suggest a relatively limited presence of GTG10 variant in vineyards. “
“Maize rough dwarf disease caused by Rice black-streaked dwarf virus (RBSDV) is the most important disease of maize in China. Although deploying disease resistant

hybrids would be the most effective way to control the disease, development of resistant hybrids has been limited by virus transmission rates that are too low for effective screening. An efficient inoculation technique for RBSDV was developed using Laodelphax striatellus Fallen, in which a virus-free planthopper colony was developed and viruliferous planthoppers were obtained by allowing a 3- to 4-day acquisition access period on RBSDV-infected

wheat plants. Planthoppers were then allowed a 25- to 28-day latent period on wheat seedlings followed by a 3-day inoculation access period on two-to-three-leaf stage maize seedlings. MCE By 35 days postinoculation, susceptible hybrid ‘Zhengdan 958’, inbred lines of ‘Ye 107’ and ‘Ye 478’ plants showed 100% RBSDV infection with symptoms of stunting plants, darkening leaves and white waxy swellings on underside of leaves. At tasseling stage, average disease indices were from 96.4 to 100.0%. Enzyme-linked immunosorbent assays were correlated with the presence of symptoms. The high efficiency of RBSDV transmission obtained using this technique provides a reliable procedure to screen for RBSDV resistance in maize. “
“Conidia of Colletotrichum gloeosporioides germinate and form infection hyphae on inoculated, immature mango but remain quiescent until fruit ripening. Antifungal resorcinols have previously been implicated for quiescence of C. gloesoporioides and Alternaria alternata on mango.

Cloning and sequencing of the 549-bp RT-PCR amplicon of the helic

Cloning and sequencing of the 549-bp RT-PCR amplicon of the helicase domain from grapevine cv. Shiraz lead to the detection of a variant of GLRaV-3, which shared only 69.6–74.1% nt similarity with other variants, including the recently reported, new, highly divergent variant, isolate 139. This was confirmed by the results of the analysis of 517-bp amplicon of the HSP70 gene of GLRaV-3 generated in RT-nested PCR based on degenerate primers for the PF-562271 ic50 simultaneous amplification of members

of the Closteroviridae family designed by Dovas and Katis (J Virol Methods, 109, 2003, 217). In this genomic region, the variant shares 72.3–78.7% nt similarity with other variants of GLRaV-3. Doramapimod This previously unreported, new, highly divergent variant was provisionally named GTG10. From the alignment of the HSP70 sequences primers for the specific RT-nested PCR amplification of the variant GTG10 and members of group VI, and specific simultaneous amplification of variants of groups I, II and III, were designed. The results obtained from brief testing of various grapevines using all these primers suggest a relatively limited presence of GTG10 variant in vineyards. “
“Maize rough dwarf disease caused by Rice black-streaked dwarf virus (RBSDV) is the most important disease of maize in China. Although deploying disease resistant

hybrids would be the most effective way to control the disease, development of resistant hybrids has been limited by virus transmission rates that are too low for effective screening. An efficient inoculation technique for RBSDV was developed using Laodelphax striatellus Fallen, in which a virus-free planthopper colony was developed and viruliferous planthoppers were obtained by allowing a 3- to 4-day acquisition access period on RBSDV-infected

wheat plants. Planthoppers were then allowed a 25- to 28-day latent period on wheat seedlings followed by a 3-day inoculation access period on two-to-three-leaf stage maize seedlings. MCE公司 By 35 days postinoculation, susceptible hybrid ‘Zhengdan 958’, inbred lines of ‘Ye 107’ and ‘Ye 478’ plants showed 100% RBSDV infection with symptoms of stunting plants, darkening leaves and white waxy swellings on underside of leaves. At tasseling stage, average disease indices were from 96.4 to 100.0%. Enzyme-linked immunosorbent assays were correlated with the presence of symptoms. The high efficiency of RBSDV transmission obtained using this technique provides a reliable procedure to screen for RBSDV resistance in maize. “
“Conidia of Colletotrichum gloeosporioides germinate and form infection hyphae on inoculated, immature mango but remain quiescent until fruit ripening. Antifungal resorcinols have previously been implicated for quiescence of C. gloesoporioides and Alternaria alternata on mango.

[7] Recurrent cholangitis with or without associated decompensati

[7] Recurrent cholangitis with or without associated decompensation of liver function can be an indication for LT in

BA.[145] At least 80% of patients with BA are transplanted by 20 years of age, with the majority transplanted under 4 years of age.[7, 126] Technical variant grafts (i.e., living related, split) are frequently utilized in smaller children with comparable results.[140] In the U.S., the overall 10-year actuarial graft and patient survival for liver transplant in BA is 73% and 86%, respectively.[146] 32. Hepatoportoenterostomy (HPE) is the preferred initial management for biliary atresia (1-B), but liver transplant evaluation should be considered in infants with evidence of decompensated liver disease prior to HPE. (2-B) 33. Aggressive nutritional check details support prior to LT is needed to improve outcomes in cholestatic children with BA. (1-B) 34. BA patients post-HPE AUY-922 in vivo should be promptly referred for LT evaluation if the total bilirubin is greater than 6 mg/dL beyond 3 months from HPE (1-B); liver transplant evaluation should be considered in

BA patients whose total bilirubin remains between 2-6 mg/dL (1-B), and for those with lesser bilirubin values who have unmanageable consequences of biliary cirrhosis or portal hypertension. (2-B) 35. High-dose corticosteroid therapy initiated within 72 hours of HPE is not recommended. (1-B) Alagille syndrome (AGS) is an autosomal dominant, multisystem disorder which may affect the liver, heart, eyes, and skeleton, kidneys, and cerebro-vascular or peripheral vascular systems with recognizable facial features including triangular facies, hypertelorism, prominent forehead, and pointed chin.[147-150] Liver involvement ranges from minimal liver

test abnormalities to biliary cirrhosis. Infants and children with AGS and significant cholestasis may experience well-compensated liver disease with absent or minimal evidence of clinical liver disease later in life.[151] An estimated 20% to 30% of patients with AGS will require LT.[152-155] Impaired synthetic function, uncontrolled portal hypertension, and chronic encephalopathy are uncommon in AGS. Complications of profound cholestasis, intractable pruritus, failure to thrive, severe hypercholesterolemia, and MCE osteodystrophy have prompted consideration for LT.[62, 122, 153, 155-157] However, partial internal biliary diversion,[158] partial external biliary diversion,[159] and ileal exclusion[160] have improved pruritus, xanthoma burden, and quality of life in some patients. Hypercholesterolemia associated with AGS is predominantly due to elevations in lipoprotein X which may, in fact, protect against atherosclerosis.[161] Reduced somatic growth parameters are recognized components of AGS. While cholestasis is resolved by LT, growth parameters may not be completely reversed by LT.

[7] Recurrent cholangitis with or without associated decompensati

[7] Recurrent cholangitis with or without associated decompensation of liver function can be an indication for LT in

BA.[145] At least 80% of patients with BA are transplanted by 20 years of age, with the majority transplanted under 4 years of age.[7, 126] Technical variant grafts (i.e., living related, split) are frequently utilized in smaller children with comparable results.[140] In the U.S., the overall 10-year actuarial graft and patient survival for liver transplant in BA is 73% and 86%, respectively.[146] 32. Hepatoportoenterostomy (HPE) is the preferred initial management for biliary atresia (1-B), but liver transplant evaluation should be considered in infants with evidence of decompensated liver disease prior to HPE. (2-B) 33. Aggressive nutritional ABT-263 purchase support prior to LT is needed to improve outcomes in cholestatic children with BA. (1-B) 34. BA patients post-HPE Selleck R428 should be promptly referred for LT evaluation if the total bilirubin is greater than 6 mg/dL beyond 3 months from HPE (1-B); liver transplant evaluation should be considered in

BA patients whose total bilirubin remains between 2-6 mg/dL (1-B), and for those with lesser bilirubin values who have unmanageable consequences of biliary cirrhosis or portal hypertension. (2-B) 35. High-dose corticosteroid therapy initiated within 72 hours of HPE is not recommended. (1-B) Alagille syndrome (AGS) is an autosomal dominant, multisystem disorder which may affect the liver, heart, eyes, and skeleton, kidneys, and cerebro-vascular or peripheral vascular systems with recognizable facial features including triangular facies, hypertelorism, prominent forehead, and pointed chin.[147-150] Liver involvement ranges from minimal liver

test abnormalities to biliary cirrhosis. Infants and children with AGS and significant cholestasis may experience well-compensated liver disease with absent or minimal evidence of clinical liver disease later in life.[151] An estimated 20% to 30% of patients with AGS will require LT.[152-155] Impaired synthetic function, uncontrolled portal hypertension, and chronic encephalopathy are uncommon in AGS. Complications of profound cholestasis, intractable pruritus, failure to thrive, severe hypercholesterolemia, and MCE osteodystrophy have prompted consideration for LT.[62, 122, 153, 155-157] However, partial internal biliary diversion,[158] partial external biliary diversion,[159] and ileal exclusion[160] have improved pruritus, xanthoma burden, and quality of life in some patients. Hypercholesterolemia associated with AGS is predominantly due to elevations in lipoprotein X which may, in fact, protect against atherosclerosis.[161] Reduced somatic growth parameters are recognized components of AGS. While cholestasis is resolved by LT, growth parameters may not be completely reversed by LT.

Key Word(s): 1 Tetrandrine; 2 Paclitaxel; 3 hydrogel; 4 gastr

Key Word(s): 1. Tetrandrine; 2. Paclitaxel; 3. hydrogel; 4. gastric cancer; Presenting Author: HAIFENG JIN Additional Authors: XIAOYIN ZHANG, LI XU, NA LIU, YUPENG SHI, YAN selleck screening library PAN, LIPING YANG, JUAN FENG, YONGBO GUO, KAICHUN WU, DAIMING FAN, XIN WANG Corresponding Author: XIN WANG Affiliations: Xijing Hospital of Digestive Diseases; Xijing Hospital of Digestive Disases Objective: To

observe the efficacy and safety of Cetuximab combined with Fluorouracil-based chemotherapy in the treatment of advanced colorectal cancer and offer clinical experience in the application of cetuximab in advanced colorectal cancer. Methods: Retrospective analysis of clinical data of 104 patients with advanced colorectal cancer in our hospital. 35 cases are Cetuximab in

combination with chemotherapy, in which 22 cases are the first-line treatment and 13 cases are non-first-line treatment. 10 cases are cetuximab combined with FOLFIRI, 16 cases are Cetuximab combined with FOLFOX4, 5 cases are cetuximab combined with FOLFOX6, and 4 cases are cetuximab combined with Fluorouracil. Another 69 cases are Cetuximab combined with Fluorouracil-based chemotherapy, in which 21 cases are FOLFIRI, 23 cases are FOLFOX4, 20 cases are FOLFOX6, and 5 cases are Fluorouracil. The two groups were compared with efficiency, disease control rate, progression-free survival time (PFS), overall survival (OS) and adverse events. 2 count data were compared using χ2 test and measurement data using t test. The chi-square test was used to compare the difference of short-term efficacy between the first and non-first-line application of Cetuximab learn more combined with chemotherapy. Results: The effective rates of Cetuximab combined with Fluorouracil-based chemotherapy and chemotherapy alone were 42.8% and 26.5% respectively. The difference was statistically significant (P < 0.05); Also, the disease control rates are 71.5% and 51.2% respectively. The difference was statistically significant (P < 0.05). PFS of Cetuximab combined MCE with chemotherapy group was 5.5 months, while PFS of chemotherapy group was

3.5 months. There was a significant difference between the two groups (P < 0.05). Os of Cetuximab combined with chemotherapy group was 12 months, while OS of the chemotherapy group was 8 months. There was a significant difference between the two groups (P < 0.05). Disease control rate was higher in first-line applications than in non-first-line applications (82.5% VS71.5%), but the difference was not statistically significant (P = 0.189). The overall incidence of common adverse reactions was 81% in Cetuximab combined with chemotherapy and the difference was not statistically significant (P&gt 0.05). The adverse reactions of III ∼ IV grade included acne-like rash (12.5%), neutrophils decreased (20.5%) and diarrhea (3.6%). 3 patients withdrawal because of IV grade myelosuppression. Conclusion: The adverse reactions of Cetuximab are few and most of them can be tolerated.

Key Word(s): 1 Tetrandrine; 2 Paclitaxel; 3 hydrogel; 4 gastr

Key Word(s): 1. Tetrandrine; 2. Paclitaxel; 3. hydrogel; 4. gastric cancer; Presenting Author: HAIFENG JIN Additional Authors: XIAOYIN ZHANG, LI XU, NA LIU, YUPENG SHI, YAN click here PAN, LIPING YANG, JUAN FENG, YONGBO GUO, KAICHUN WU, DAIMING FAN, XIN WANG Corresponding Author: XIN WANG Affiliations: Xijing Hospital of Digestive Diseases; Xijing Hospital of Digestive Disases Objective: To

observe the efficacy and safety of Cetuximab combined with Fluorouracil-based chemotherapy in the treatment of advanced colorectal cancer and offer clinical experience in the application of cetuximab in advanced colorectal cancer. Methods: Retrospective analysis of clinical data of 104 patients with advanced colorectal cancer in our hospital. 35 cases are Cetuximab in

combination with chemotherapy, in which 22 cases are the first-line treatment and 13 cases are non-first-line treatment. 10 cases are cetuximab combined with FOLFIRI, 16 cases are Cetuximab combined with FOLFOX4, 5 cases are cetuximab combined with FOLFOX6, and 4 cases are cetuximab combined with Fluorouracil. Another 69 cases are Cetuximab combined with Fluorouracil-based chemotherapy, in which 21 cases are FOLFIRI, 23 cases are FOLFOX4, 20 cases are FOLFOX6, and 5 cases are Fluorouracil. The two groups were compared with efficiency, disease control rate, progression-free survival time (PFS), overall survival (OS) and adverse events. 2 count data were compared using χ2 test and measurement data using t test. The chi-square test was used to compare the difference of short-term efficacy between the first and non-first-line application of Cetuximab BMN 673 combined with chemotherapy. Results: The effective rates of Cetuximab combined with Fluorouracil-based chemotherapy and chemotherapy alone were 42.8% and 26.5% respectively. The difference was statistically significant (P < 0.05); Also, the disease control rates are 71.5% and 51.2% respectively. The difference was statistically significant (P < 0.05). PFS of Cetuximab combined MCE with chemotherapy group was 5.5 months, while PFS of chemotherapy group was

3.5 months. There was a significant difference between the two groups (P < 0.05). Os of Cetuximab combined with chemotherapy group was 12 months, while OS of the chemotherapy group was 8 months. There was a significant difference between the two groups (P < 0.05). Disease control rate was higher in first-line applications than in non-first-line applications (82.5% VS71.5%), but the difference was not statistically significant (P = 0.189). The overall incidence of common adverse reactions was 81% in Cetuximab combined with chemotherapy and the difference was not statistically significant (P&gt 0.05). The adverse reactions of III ∼ IV grade included acne-like rash (12.5%), neutrophils decreased (20.5%) and diarrhea (3.6%). 3 patients withdrawal because of IV grade myelosuppression. Conclusion: The adverse reactions of Cetuximab are few and most of them can be tolerated.

This individualized approach allowed successful management of the

This individualized approach allowed successful management of the patient. “
“This retrospective study compared computed tomography (CT) imaging to routine dental periapical radiographs in diagnosing radiolucencies around endodontically treated teeth. Of the 244 CT scans evaluated, 104 had no teeth on the scan. On the remaining 140 scans, 353 teeth fell into the following categories: 59 maxillary molars, 30 mandibular molars, 66 maxillary premolars, 56 mandibular premolars, and 141 anterior teeth. Positive and negative predictive values were calculated, as were sensitivity, specificity, and prevalence assuming the CT scan was the test standard. For the total tooth population periapical

radiograph – CT slice sensitivity was 52, specificity was 90, the positive predictive value (PPV) was 97, the negative predictive value (NPV) was 25, and the prevalence 85. In the population studied, BI 6727 the CT scan had a greater ability to show radiolucencies that were not evident on periapical radiographs. “
“Healthy jawbones ensure better PD98059 price tooth anchorage and the ability to masticate and maintain metabolism. This is achieved by a delicate balance between bone formation and resorption in response to functional demands. An imbalance in the expression of receptor activator of nuclear factor kappa-B (RANK) ligand (RANKL) and osteoprotegerin (OPG) or osteoclastogenesis inhibitory factor (OCIF) is believed to

be the underlying mechanism of osteolysis in metastases, multiple myelomas, and cancer therapy-induced bone loss in patients. Considered mainly as bone-specific agents to treat postmenopausal osteoporosis, bisphosphonates, in combination with certain chemotherapeutic agents have proved to be effective in prevention of tumor formation and metastatic osteolysis in bone tissue. Osteonecrosis of the jaws associated with them has, however, been of grave concern to the prosthodontist,

as it predisposes patients to a bone-deficient basal seat for dental prostheses. This manuscript reviews available information over the past 13 years on possible mechanisms of bone loss, bisphosphonate-induced osteonecrosis of jaw bones, and prosthodontic medchemexpress concerns. “
“This is a report of a case of an unusual oral lesion after the placement of mini implants for the retention of a mandibular overdenture. A patient received four 2-mm-wide dental implants in the anterior mandible and had her mandibular denture relined with a soft material. After 3 months, she was not wearing her mandibular denture, and two nodular ulcerated lesions were observed near the mini implants. The lesions ceased following excision and regular denture wearing. Clinical and microscopic examination led to the diagnosis of traumatic ulcerative granuloma with stromal eosinophilia (TUGSE). TUGSE is rare lesion with a benign course that may occur following injury of the oral mucosa by mini implants under certain circumstances.

7D) To address how YAP works on BTRC expression, BTRC was examin

7D). To address how YAP works on BTRC expression, BTRC was examined in HepG2 cells with either YAP knocked down or ectopically expressed. We found that BTRC was up-regulated by knockdown of YAP (Fig. 7E), whereas it was down-regulated by overexpression of YAP (Fig. 7F). On the basis of the interaction between YAP and CREB, we investigated the growth of HepG2 clones after injection into athymic mice. Compared to the control, HepG2 cells with either YAP or CREB knocked down effectively prevented tumor growth, but such effects could be rescued by simultaneously selleck products overexpressing either CREB or YAP in a nude mouse model (Fig. 8A).

Thus, we confirmed such a close relationship in vivo. Although much is known about its posttranslational modification, the transcriptional regulation of YAP, as well as the cross-talk between YAP and other pathways, is still poorly understood. In the present study, we show that YAP-CREB interaction is critical for liver cancer cells, both in vitro and in vivo, through a positive autoregulatory feedback loop. We revealed that YAP inhibited the degradation of CREB mediated by BTRC and p38, and the accumulation of CREB, in turn, stimulated YAP transcription. Moreover, both CREB and YAP proteins are highly expressed in a subset of human liver cancer samples and are closely correlated, suggesting an important role of this feedback loop in liver cancers. Without a DNA-binding domain, YAP

has to work through target transcription factors, such as TEAD family proteins Runx2, Smads, and so on.[16] ABT-263 purchase Because of

the fact that there were no co-occupancies of YAP and CREB at CRE of YAP, Rab25, and HULC promoters by ChIP assay (data not shown), we believe that YAP proteins do not act as cotranscription factors to CREB, but rather as regulators to CREB activity (Fig. 3). In a recent study, Skouloudaki and Walz[19] reported that YAP recruits tyrosine kinase c-Abl, antagonizes the function of Nedd4.2, an E3 ubiquitin-ligase, and thus protects AMOTL1 from degradation. Similarly, our findings reveal a new role of YAP in protecting another protein CREB from degradation. Phosphorylation on CREB ser133 by MAPK14/p38 kinase primes subsequent CREB degradation (Fig. 5 and Supporting Fig. 5), which can be blocked by YAP (Fig. 6). YAP controls phosphorylation MCE公司 of MAPK14/p38 through BTRC (Fig. 7), an E3 ligase that interacts with and mediates YAP unbiquitination and degradation.[18] Conversely, we first uncovered that this interaction also facilitates BTRC degradation (Fig. 7). Noubissi et al.[20] reported that β-catenin stabilizes BTRC mRNA by enhancing an RNA-binding protein CRD-BP, expression through promoter binding and, ultimately, elevates BTRC protein levels. Also, Imajo et al.[21] demonstrated that YAP suppresses the nuclear translocation of β-catenin by directly binding to it in the cytoplasm, thereby inhibiting β-catenin.