scholarly journals Reply: expression of carbonic anhydrase IX suggests poor response to therapy in rectal cancer

2009 ◽  
Vol 101 (2) ◽  
pp. 373-373 ◽  
Author(s):  
E Korkeila ◽  
K Talvinen ◽  
P M Jaakkola ◽  
H Minn ◽  
K Syrjänen ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Carbonic Anhydrase ◽  
Poor Response ◽  
Response To Therapy ◽  
Carbonic Anhydrase Ix

scholarly journals Expression of carbonic anhydrase IX suggests poor outcome in rectal cancer

2009 ◽  
Vol 100 (6) ◽  
pp. 874-880 ◽  
Author(s):  
E Korkeila ◽  
K Talvinen ◽  
P M Jaakkola ◽  
H Minn ◽  
K Syrjänen ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Carbonic Anhydrase ◽  
Carbonic Anhydrase Ix ◽  
Poor Outcome

scholarly journals Carbonic Anhydrase IX and Survivin in Colorectal Adenocarcinoma Cells: Slovakian Population Study

Biology ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 872
Author(s):  
Zuzana Kováčová ◽  
Ingrid Hodorová
Keyword(s):  
Carbonic Anhydrase ◽  
Colorectal Adenocarcinoma ◽  
Survivin Expression ◽  
Response To Therapy ◽  
Carbonic Anhydrase Ix ◽  
Immunohistochemical Method ◽  
Colorectal Tissue ◽  
Adenocarcinoma Cells ◽  
Chi Squared ◽  
Normal Colorectal Tissue

The aim of this study was to detect carbonic anhydrase IX (CAIX) and survivin in the colorectal adenocarcinoma cells of the Slovakian population. We used an indirect three-step immunohistochemical method with DAB staining for the localization of the proteins and investigation their expression. We compared their expression with expression in healthy colorectal tissue. In 74 tissues of colorectal adenocarcinomas, 42% showed CAIX positivity and 20% showed survivin positivity. Brown membrane immunostaining was visible in CAIX-positive tumors. Survivin-positive tumors had strong brown cytoplasmic immunostaining. Co-expression of both proteins was present in five specimens (7%). The samples of normal colorectal tissue (without carcinoma) were CAIX-negative and survivin-negative. We also applied the Chi-squared test for evaluation statistically significant association between the expression of proteins and selected clinical and histopathological parameters. We did not find any statistically significant correlations between CAIX or survivin expression and sex of patients, the grade of the tumor, nodal status and presence of metastasis (p > 0.05). The fact that all samples of normal colorectal tissue were CAIX- and survivin-negative could lead to the possibility of using these two proteins as potential tumor diagnostic markers. On the basic of the available publications and data, we suggest that CAIX and survivin could be negative independent prognostic markers of colorectal cancer, which could affect response to therapy.

780: Carbonic Anhydrase IX (CAIX) Expression and VHL Gene Alteration as Predictors of Survival in Renal Cell Carcinoma

2004 ◽  
Vol 171 (4S) ◽  
pp. 206-207 ◽  
Author(s):  
Hideki Mukouyama ◽  
Masahiro Yao ◽  
David B. Seligson ◽  
John S. Lam ◽  
Yoji Nagashima ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Carbonic Anhydrase ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Carbonic Anhydrase Ix ◽  
Vhl Gene ◽  
Gene Alteration ◽  
Caix Expression

scholarly journals Distinct Expression Patterns of Carbonic Anhydrase IX in Clear Cell, Microcystic, and Angiomatous Meningiomas

2019 ◽  
Vol 78 (12) ◽  
pp. 1081-1088
Author(s):  
Rati Chkheidze ◽  
Patrick J Cimino ◽  
Kimmo J Hatanpaa ◽  
Charles L White ◽  
Manuel Ferreira ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Clear Cell ◽  
Expression Patterns ◽  
Carbonic Anhydrase Ix ◽  
World Health ◽  
Loss Of Function ◽  
Ca Ix ◽  
Hypoxia Marker ◽  
Other World ◽  
Health Organization

Abstract Clear cell, microcytic, and angiomatous meningiomas are 3 vasculature-rich variants with overlapping morphological features but different prognostic and treatment implications. Distinction between them is not always straightforward. We compared the expression patterns of the hypoxia marker carbonic anhydrase IX (CA-IX) in meningiomas with predominant clear cell (n = 15), microcystic (n = 9), or angiomatous (n = 11) morphologies, as well as 117 cases of other World Health Organization recognized histological meningioma variants. Immunostaining for SMARCE1 protein, whose loss-of-function has been associated with clear cell meningiomas, was performed on all clear cell meningiomas, and selected variants of meningiomas as controls. All clear cell meningiomas showed absence of CA-IX expression and loss of nuclear SMARCE1 expression. All microcystic and angiomatous meningiomas showed diffuse CA-IX immunoreactivity and retained nuclear SMARCE1 expression. In other meningioma variants, CA-IX was expressed in a hypoxia-restricted pattern and was highly associated with atypical features such as necrosis, small cell change, and focal clear cell change. In conclusion, CA-IX may serve as a useful diagnostic marker in differentiating clear cell, microcystic, and angiomatous meningiomas.

scholarly journals Inhibition of Carbonic Anhydrase IX Promotes Apoptosis through Intracellular pH Level Alterations in Cervical Cancer Cells

2021 ◽  
Vol 22 (11) ◽  
pp. 6098
Author(s):  
Ebru Temiz ◽  
Ismail Koyuncu ◽  
Mustafa Durgun ◽  
Murat Caglayan ◽  
Ataman Gonel ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Intracellular Ph ◽  
Hela Cells ◽  
Protein Level ◽  
Caspase 3 ◽  
Solid Tumours ◽  
Carbonic Anhydrase Ix ◽  
Parp Activation ◽  
Ca Ix ◽  
Cervical Cancer Cells

Carbonic anhydrase IX (CAIX) is a hypoxia-related protein that plays a role in proliferation in solid tumours. However, how CAIX increases proliferation and metastasis in solid tumours is unclear. The objective of this study was to investigate how a synthetic CAIX inhibitor triggers apoptosis in the HeLa cell line. The intracellular effects of CAIX inhibition were determined with AO/EB, AnnexinV-PI, and γ-H2AX staining; measurements of intracellular pH (pHi), reactive oxygen species (ROS), and mitochondrial membrane potential (MMP); and analyses of cell cycle, apoptotic, and autophagic modulator gene expression (Bax, Bcl-2, caspase-3, caspase-8, caspase-9, caspase-12, Beclin, and LC3), caspase protein level (pro-caspase 3 and cleaved caspase-3, -8, -9), cleaved PARP activation, and CAIX protein level. Sulphonamide CAIX inhibitor E showed the lowest IC50 and the highest selectivity index in CAIX-positive HeLa cells. CAIX inhibition changed the morphology of HeLa cells and increased the ratio of apoptotic cells, dramatically disturbing the homeostasis of intracellular pHi, MMP and ROS levels. All these phenomena consequent to CA IX inhibition triggered apoptosis and autophagy in HeLa cells. Taken together, these results further endorse the previous findings that CAIX inhibitors represent an important therapeutic strategy, which is worth pursuing in different cancer types, considering that presently only one sulphonamide inhibitor, SLC-0111, has arrived in Phase Ib/II clinical trials as an antitumour/antimetastatic drug.

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