Immunocharacterization of matrix metalloproteinase-2 and matrix metalloproteinase-9 in canine transmissible venereal tumors

Akkoç, Ahmet; Nak, Deniz; Demirer, Aylin Alasonyalilar; Şimşek, Gözde

doi:10.1080/10520295.2016.1259500

Cited by 13 publications

(9 citation statements)

References 20 publications

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“…Lately, MMP-2 has garnered attention by its correlation with the tumor invasion and formation of metastases (26). A recent study reported the presence of MMP-2 and -9 in the TVT tissue (22). The findings of this study supported the previous study and demonstrated that MMP-2 was strongly expressed by TVT cells.…”

Section: Discussionsupporting

confidence: 92%

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Immunohistochemical Determination of the Matrix Metalloproteinase-2 and -7 Expression in Transmissible Venereal Tumor in Dogs

Özmen

Ogus

2018

Veterinary Journal of Mehmet Akif Ersoy University

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Transmissible venereal tumor (TVT) is a sexually transmitted, naturally occurring tumor of the canine family and often occurs in tropical and subtropical countries. The matrix metalloproteinases (MMPs) are endogenous proteases accountable for the degradation of extracellular matrix (ECM) components, such as collagen and other proteins including the basement membrane. MMPs play a vital role in the tumor metastasis and angiogenesis. Both MMP-2 and-7 strongly associated with the invasion and metastasis of different cancer types. This study aims to investigate the MMP-2 and-7 expression in naturally occurring TVT in 20 dogs using immunohistochemical methods. Immunohistochemically, we observed increased MMP-2 and-7 expressions in tumor cells. In addition, a positive correlation was determined between the tumor size and immunoexpressions of the markers indicating that both MMP-2 and-7 participate in the TVT pathogenesis. Köpek transmissible venereal tümörlerinde mmp-2 ve mmp-7 aktivitesinin immunohistokimyasal olarak belirlenmesi ÖZ Transmissible venereal tümör (TVT), çiftleşmeyle bulaşan, kanidae ailesindeki hayvanlarda doğal olarak şekillenen, genellikle tropikal ve subtropikal ülkelerde gözlenen bir tümördür. Matriks metalloproteinazlar (MMP)'ler endojen peptidazlar olup, ekstraselüler matriksin (ECM) kollagen ve bazal membran gibi diğer proteinlerini parçalama özelliğine sahiptirler. MMP'ler tümör metastaz ve angiogenezinde önemli rol oynarlar. MMP-2 ve MMP-7 değişik tip kanserlerde invazyon ve metastaz ile ilişkili bulunmuşlardır. Bu çalışmanın amacı, MMP-2 ve MMP-7'nin 20 adet köpekte doğal olarak şekillenmiş TVT olgusunda immunhistoimyasal olarak ekspresyonlarının incelenmesidir. İmmunohistokimyasal olarak TVT'yi oluşturan tümör hücrelerde MMP-2 ve MMP-7 aktivitesinde artış şekillendiği gözlendi. Ayrıca tümör büyüklüğü ile immunoekspresyonlar arasında pozitif korelasyon saptandı, bu sonuç, MMP-2 ve MMP-7'in TVT patojenezinde önemli bir rol oynadığını gösterdi.

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Section: Discussionsupporting

confidence: 92%

“…MMP-7 is elevated in numerous human primary cancer types (21). As only one study is available about the MMP-2 expression in TVT, the knowledge about the MMP-7 reaction in TVT is lacking (22).…”

Section: Mmp-2 (Gelatinase A)mentioning

confidence: 99%

Immunohistochemical Determination of the Matrix Metalloproteinase-2 and -7 Expression in Transmissible Venereal Tumor in Dogs

Özmen

Ogus

2018

Veterinary Journal of Mehmet Akif Ersoy University

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“…Elimination of the ECM proteins that surround the tumor cells is an important step for metastasis. (Akkoc et. al., 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Increased concentrations of MMPs have been associated with invasion, metastasis and poor prognosis in many malignancies of humans (Loukopoulos et al, 2003;Aresu et al, 2011). MMP-2 and MMP-9 are the most studied proteases in cancer biology (Akkoc et al, 2017). Although TVT has a very low capacity to metastasize, it can metastasize to many tissues and organs such as liver, kidney, spleen, eyes, brain, pituitary gland, skin, subcutis, mesenteric lymph nodes and peritoneum (Tiwari et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

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Expression of PCNA, MMP-9, p53, Bax and Bcl-2 in canine transmissible venereal tumors

Karakurt

Kuru

Dağ

et al. 2020

Journal of Istanbul Veterinary Sciences

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In this study, we aimed to evaluate the proliferative, metastatic and apoptotic capacities of TVT cases, which are in various phases of development, by using immunohistochemical markers. The material of this study consisted of twelve female and six male dogs diagnosed with TVT brought to our department between 2007 and 2020 years. Diff-quick staining was applied to the smear taken from tumoral masses for cytological examinations. Tumoral tissues from dogs were fixed in a 10% neutral buffered formaldehyde solution. After routine tissue procedures Hematoxylin & Eosin stain was applied to the sections. Tissue sections were investigated under a light microscope and photographed. Immunohistochemical staining was performed on the tissues using the avidin-biotin immune peroxidase complex method. As a result of macroscopic, cytological and histopathological examinations, TVT positive cases were divided into three according to their developmental stages. While the expression of PCNA, MMP-9, mutant p53 and Bcl-2 increased significantly in progressive cases compared to regressive and stable cases, Bax expression increased significantly in regressive cases compared to progressive and stable cases. In conclusion, we thought that the mentioned markers are very useful for understanding the prognosis of TVT, the tumor aggressiveness and the survival of the malignant cells.

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RETRACTED ARTICLE: Downregulation of monocarboxylate transporter 1 inhibits the invasion and migration through suppression of the PI3K/Akt signaling pathway in human nasopharyngeal carcinoma cells

Zhang

Gao

et al. 2018

J Bioenerg Biomembr

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Monocarboxylate transporter 1 (MCT1) has been reported to be correlated wtih decreased survival and advanced stage of progression in a series of human tumor cells and primary cancers. Specifically, MCT1 has been documented to be involved in tumor progression, including invasion and migration. Here, we investigated the mechanism and effect of regulation of MCT1 on invasion and migration of nasopharyngeal carcinoma (NPC) cells. In the study, we firstly demonstrated that the expression of MCT1 in CNE2Z cells was obviously higher than that in HNE1 cells. Downregulation of MCT1 inhibited the invasion and migration in CNE2Z cells, upregulated the expression of E-cadherin, TIMP (tissue inhibitor of metalloproteinase)-2 and TIMP-1, and suppressed the expression of matrix metalloproteinases (MMP)-9 and MMP-2. Correspondingly, upregulation of MCT1 enhanced the invasive and migratory potential in HNE1 cells, increased the expression of MMP-9 and MMP-2, and downregulated the expression of E-cadherin, TIMP-2 and TIMP-1. The mechanistic study demonstrated that the effect of MCT1 might be correlated with PI3K/Akt signaling pathway. LY294002, a PI3K inhibitor, increased the inhibition of invasion and migration mediated by downregulation of MCT1 in CNE2Z cells. These findings collectively suggested that MCT1 might act as a new regulator to improve invasion and migration of NPC cells and be correlated with activating the PI3K/Akt pathway.

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Immunocharacterization of matrix metalloproteinase-2 and matrix metalloproteinase-9 in canine transmissible venereal tumors

Cited by 13 publications

References 20 publications

Immunohistochemical Determination of the Matrix Metalloproteinase-2 and -7 Expression in Transmissible Venereal Tumor in Dogs

Immunohistochemical Determination of the Matrix Metalloproteinase-2 and -7 Expression in Transmissible Venereal Tumor in Dogs

Expression of PCNA, MMP-9, p53, Bax and Bcl-2 in canine transmissible venereal tumors

RETRACTED ARTICLE: Downregulation of monocarboxylate transporter 1 inhibits the invasion and migration through suppression of the PI3K/Akt signaling pathway in human nasopharyngeal carcinoma cells

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