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The expression of matrix metalloproteinase 2, 9 and 11 in Ethiopian breast cancer patients

Abstract

Introduction

Matrix metalloproteinases (MMPs) play a pathophysiological role in cancer initiation and progression. Numerous studies have examined an association between MMP-2, MMP-9, and MMP-11 expression and clinicopathological characteristics of breast cancer (BC); however, no research has been done on the MMP expression levels in BC cases from Ethiopia.

Materials and methods

A total of 58 formalin-fixed paraffin-embedded breast tissue samples encompassing 16 benign breast tumors and 42 BC were collected. The RNA was extracted and quantitative reverse-transcription PCR was performed. GraphPad Prism version 8.0.0 was used for statistical analysis.

Results

The MMP-11 expression levels were significantly higher in breast cancer cases than in benign breast tumors (P = 0.012). Additionally, BC cases with positive lymph nodes and ER-positive receptors had higher MMP-11, MMP-9, and MMP-2 expression than cases with negative lymph nodes and ER-negative, respectively. The MMP-11 and MMP-9 expressions were higher in grade III and luminal A-like tumors than in grade I-II and other subtypes, respectively.

Conclusion

The MMP-11 expression was higher in BC than in benign breast tumors. Additionally, MMP-11, MMP-9, and MMP-2 were higher in BC with positive lymph nodes and estrogen receptors. Our findings suggest an important impact of MMPs in BC pathophysiology, particularly MMP-11.

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Introduction

Matrix metalloproteinases (MMPs) are a family of zinc-dependent extracellular matrix remodeling endopeptidases, which play essential roles in physiological processes such as organogenesis, cell repair, remodeling of tissues, apoptosis, and motility [1]. The MMPs are also involved in pathological processes like cancer development, tumor neovascularization, angiogenesis, invasion, and metastasis [2, 3]. The expression and activity of MMPs are increased in advanced tumor stages and metastasized disease [2]. Currently, at least 26 members of this family are known to exist and are divided into four main groups: interstitial collagenases, gelatinases, stromelysins, and membrane-type MMPs [4]. Gelatinase MMPs such as matrix metalloproteinase − 9 (MMP-9) and matrix metalloproteinase − 2 (MMP-2) overexpression are associated with oral cancer, colorectal tumor, bladder carcinoma, retinoblastoma, pancreatic cancer, and ovarian cancer [5,6,7,8,9,10].

Several studies have investigated the association between clinicopathological features of breast cancer with MMP-2, MMP-9, and matrix metallopeptidases − 11 (MMP-11) expression. There was an inverse correlation between the expression of MMP-2 and MMP-9 in breast cancer [2, 11,12,13,14]. There is also a positive correlation between the expression of MMP-2, MMP-9, and MMP-11 and breast cancer prognosis [15,16,17,18]. In addition, an earlier study by Chenard and colleagues revealed that MMP-11 levels showed no correlation with breast tumor size, axillary-node status, and tumor grade [19]. Despite these inconsistent results, there is no study conducted on the expression levels of MMPs in breast cancer cases from Ethiopia. This study aims to explore the association between MMP-2, MMP-9, and MMP-11 expression with clinicopathologic features among breast cancer patients in Ethiopia.

Materials and methods

Study participants

A total of 58 formalin-fixed paraffin-embedded (FFPE) tissue blocks were collected. 42 were from BC cases from referral hospitals in multiple peripheral regions of Ethiopia (24 from Ayder Referral Hospital (Mekelle City, Tigray region), 8 from Hiwot Fana Specialized University Hospital (Harer City, Hareri Region), 4 from ALERT Specialized Hospital (Addis Ababa city), 3 from Jimma University Specialized Hospital (Jimma city, Oromia region), and 3 from Hawassa University Specialized Referral Hospital (Hawassa city, SNNP region). 16 cases with benign breast tumors were collected from ALERT Specialized Hospital.

Data collection

The demographic and histopathological data were collected from pathology results in each hospital using a data collection form.

RNA extraction

The RNA was extracted from stored FFPE breast tissue specimens using the RNeasy® FFPE Kit (QIAGEN, Hilden, Germany) (Cat No 73,504) following the manufacturer’s protocol. Ten tissue sections of 2 μm thickness per sample were used for RNA extraction. The quality of extracted RNA was checked using a Nanodrop 2000 spectrophotometer. To confirm the presence of the desired PCR product, a standard PCR was performed (Fig. 1). All extracted RNA samples were then stored at -80◦C until the RT-PCR test was performed.

Fig. 1
figure 1

Representative PCR amplification result for MMP-2, MMP-9, MMP-11, and GAPDH

Quantitative one-step RT-PCR

Specific primers and probes sequence for MMP2, MMP9, and MMP11 were taken from the previous literature [20] and their appropriateness was checked using the Primer-Blast tool in NCBI (Table 1). The PCR reactions were carried out on the CFX96 Deep well Real-time PCR instrument (Bio RAD, Singapore). All quantitative reverse-transcription PCRs were performed in duplicate using the SuperScript™ III Platinum™ One-Step qRT-PCR Kit (Invitrogen/Life Technologies Corporation, Carlsbad, CA 92,008 USA) according to the manufacturer’s instructions. The GAPDH gene was used as an endogenous control. To determine the relative RNA levels of expression within the samples, standard curves for the PCR reactions were performed.

Table 1 TaqMan primers and probes sequence for the human MMPs and GAPDH

Statistical analysis

Statistical analysis was then performed through GraphPad Prism version 8.0.0 for Windows (GraphPad Software, San Diego, California USA, www.graphpad.com). The assumption of normality was evaluated using the Shapiro normality test. Based on the skewed distribution of the dataset, a non-parametric t-test followed by a Mann-Whitney test was used for the comparison of different groups, and a p-value < 0.05 was considered statistically significant.

Results

Socio-demographic and clinical characteristics

A total of 58 study participants were involved in this study, of which 42 (72.4%) and 16 (27.6%) had BC and benign breast tumors, respectively. The mean age at diagnosis was 36.6 (SD ± 13.5) years (Table 2). Grade III BC accounted for 42.9% and the size of T3-T4 accounted for 45.2%. Lymph node positivity was seen in 66.6% of BC cases. The most common histomorphological type was invasive ductal carcinoma (85.7%). Estrogen receptor (ER) and progesterone receptor (PR) positivity was 59.5% and 50.0%, respectively. Human epidermal growth factor receptor-2 (HER2) positivity was 19.0%. The most common immunohistochemistry-defined subtype was the luminal subtype (luminal A and B) which accounted for 47.6% (Table 3).

Table 2 Demographic characteristics of study participants with benign breast tumor and BC.
Table 3 Clinical characteristics of study participants with BC. Differences of features among cases assessed by the Mann-Whitney test

Relative mRNA expressions of MMPs in BC and benign breast tumor cases

The mRNA expression of MMP-11 was 5.1 times higher in BC than in benign breast tumors cases and the difference was statistically significant (P = 0.012). Higher mRNA expression of MMP-9 was also seen in BC (P = 0.105 (Fig. 2).

Fig. 2
figure 2

Expression of MMP-2, MMP-9, and MMP-11 in BC and benign breast tumor cases. Fold change in the relative levels of MMP-11 was log-transformed with median values indicated for each group by the horizontal lines

Relative expression of MMP-11 mRNA on BC and benign breast tumors grouped by Ki-67 expression, grade, and lymph node status

The expression of MMP-11 was 2.4 times higher in BC cases with lymph node positivity than in cases with negative lymph nodes (P = 0.1096). The MMP-11 expression was no statistically significant difference compared with grade I or II BC cases (Fig. 3).

Fig. 3
figure 3

Expression of MMP-11 in cases of benign breast tumor and BC categorized by Ki-67 + cell percentage, grade, and lymph node status. Log transformed values with median are denoted by horizontal lines

MMP-11 relative mRNA expressions in groups of ER, PR, HER2 status, and subtypes in BC and benign breast tumors

The expression of MMP-11 was 5.7 times higher in ER-positive than ER-negative BC cases (P = 0.0514). The MMP-11 expression was 2.4 times higher in HER2-negative BC cases than in HER2-positive cases. Luminal A-like BC subtypes had higher MMP-11 expression than benign breast tumors and other subtypes of BC (Fig. 4).

Fig. 4
figure 4

Expression of MMP-11 in cases of benign breast tumors and BC categorized by ER, PR, HER2 status, and IHC-defined BC subtypes. Log transformed values with median are denoted by horizontal lines

MMP-2 relative mRNA expressions of BC and benign breast tumors grouped with Ki-67, grade, lymph node, ER, PR, HER2 status, and subtypes

The BC cases with lymph node-positive had MMP-2 expression levels that were 1.6 times higher than those with lymph node-negative BC. The MMP-2 expression was 2 times higher in KI-67 < 20 cases than in Ki-67  20% (see Additional file 1). The MMP-2 expression was 1.3 times higher in HER2-negative BC patients compared to HER2-positive BC cases, but the difference was not statistically significant (see Additional file 2).

MMP-9 relative mRNA expressions of BC and benign breast tumors grouped with Ki-67, grade, lymph node, ER, PR, HER2 status, and subtypes

The MMP-9 expression was higher in grade III BC cases than in Grade I-II BC cases, with a 1.9 times higher difference (see Additional file 3). The ER-positive BC cases had MMP-9 expression that was 2 times higher than ER-negative BC cases. MMP-9 expression was higher in luminal A-like BC subtypes compared to benign breast tumors and other subtypes (see Additional file 4).

Discussion

The MMPs have proteolytic activity and break down the extracellular matrix, promoting angiogenesis, and controlling the growth and metastasis of tumor cells [21, 22]. They are also associated with the initiation, invasion, and metastasis of BC [4]. In the present study, the MMP-11 expression was shown to be significantly higher in BC cases compared to benign breast tumors. Several studies have observed MMP-11 expression at higher levels in BC than in nearby normal breast tissues [11, 15, 23,24,25]. MMP11 hindered SMAD family member 2 from being degraded in the tumor growth factor signaling pathway, which facilitated the growth of BC [25]. Low levels of CD8 + T cells, CD4 + T cells, and B cells are also correlated with high MMP-11 expression [26]. The MMPs also increase the availability of growth factors and cytokines [21] that could play a role in cancer initiation and progression.

In this study, there was a higher mRNA expression of MMP-2 and MMP-9 in BC patients compared to benign breast tumors, but no statistical significance. Other studies observed, higher levels of MMP-2 expression in BC than in nearby non-cancerous tissues [11, 23, 27, 28]. The significant link between increased angiostatin and the upregulation of MMP-2 and MMP-9 [29], suggests possible involvement in cancer initiation, progression, and invasion.

The current study found that the expression of MMP-11 in BC was about 2.4 times higher in lymph node-positive than in lymph node-negative. The MMP-11 increased cell motility of oral cancer cells through the focal adhesion kinase/SRC kinase pathway [30], and it is plausible that this pathway could be involved in BC metastasis. The expression of MMP-2 was about 1.6 times higher in BC patients with lymph nodes positive than in lymph nodes negative in this study. Increased cell migration and invasion are promoted by interactions between the tumor cell surface epidermal growth factor (EGF) receptors and its ligand EGF via upregulating MMP-2 expression [31].

The MMP-11 and MMP-9 mRNA expressions were higher in grade III tumors than in grade I-II in the current investigation. Similar to this study, grade III BC has been associated with increased MMP-11 mRNA expression [15]. The MMPs may promote tumor spread, invasion, and growth in BC by destroying cytokines and cell adhesion molecules and increasing angiogenesis and growth factors [12], which may lead to a worse prognosis.

The expression level of mRNA of MMP-11 was 5.7 times higher in ER-positive BC than in negative. Higher mRNA expression of MMP-11 in ER and PR-positive BC than negative BC is a finding supported by other studies [15, 25]. Cell survival mediated by MMP-11 depends on the p42/p44 MAPK and AKT pathway [32]. According to Marino et al. (2006), the primary transcriptional factor that interacts with ER and promotes the recruitment of coactivators is specificity protein 1 [33], specificity protein 1 is also implicated in the basal production of MMP-11 [34].

According to this study, HER2-negative BC had higher levels of MMP-2 and MMP-11 mRNA expression than HER2-positive BC. In contrast, other studies reported HER2-positive BC with increased mRNA expression of MMP-11 [25, 35]. The role of MMP-11 in HER2-positive BC through interaction with cancer cells, monocytes, and endothelial cells is also indicated [36].

The expression of MMP-9 and MMP-11 was higher in luminal A-like than in other BC subtypes. The higher immunohistochemical protein expression of MMP-9 among luminal A-like BC was also reported in another study [37]. In contrast, high levels of MMP-9 protein expression were found in triple-negative [14] and HER 2 enriched BC [18].

In general, our result showed MMP-11, which is a member of the stromelysin subgroup, has a stronger association with BC progression than MMP-2 and MMP-9. The MMP-11 is secreted in its active form [38], suggesting that MMP-11 may play a unique role in early tissue remodeling processes in BC progression. MMP-11 has also a significant role in tumor cell survival rather than in proteolytic action [22, 39], which may be another reason for the high expression of MMP-11 in BC progression. The BC stromal cells, particularly peritumoral fibroblasts, express significant levels of MMP-11 and are maybe associated with the early stages of aggressiveness of BC [40, 41].

Conclusions

The present study showed an association between the mRNA expression MMPs and BC. In particular, MMP-11, but also MMP-2, and MMP-9 were higher in BC when compared with benign breast tumors. Of note, the MMP-11, MMP-2, and MMP-9 mRNA expression was significantly increased in lymph node-positive and estrogen receptor-positive BC. The MMP-11 and MMP-9 expressions were higher in grade III and luminal A-like tumors than in grade I-II and other subtypes, respectively. The HER2-negative BC had higher levels of MMP-2 and MMP-11 expression than HER2-positive BC. However, our findings suggest an important impact of MMPs in BC pathophysiology, particularly MMP-11, which therefore should be analyzed more in detail.

Limtation of the study

The small sample size, retrospective design, and lack of study of additional MMP markers were the investigation’s key drawbacks.

Data Availability

The data generated in this study are available within the article. Raw data were generated and processed from the authors and are available on request to the corresponding authors.

References

  1. Xie Y, Mustafa A, Yerzhan A, Merzhakupova D, Yerlan P, Orakov N. Nuclear matrix metalloproteinases: functions resemble the evolution from the intracellular to the extracellular compartment. Cell Death Discovery. 2017;3(1):17036.

    Article  PubMed  PubMed Central  Google Scholar 

  2. Egeblad M, Werb Z. New functions for the matrix metalloproteinases in cancer progression. Nat Rev Cancer. 2002;2(3):161–74.

    Article  CAS  PubMed  Google Scholar 

  3. Quintero-Fabián S, Arreola R, Becerril-Villanueva E, Torres-Romero JC, Arana-Argáez V, Lara-Riegos J, et al. Role of Matrix Metalloproteinases in Angiogenesis and Cancer. Front Oncol. 2019;9:1370.

    Article  PubMed  PubMed Central  Google Scholar 

  4. Duffy MJ, Maguire TM, Hill A, McDermott E, O’Higgins N. Metalloproteinases: role in breast carcinogenesis, invasion and metastasis. Breast Cancer Res. 2000;2(4):252.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  5. Deng W, Peng W, Wang T, Chen J, Zhu S. Overexpression of MMPs Functions as a prognostic biomarker for oral Cancer patients: a systematic review and Meta-analysis. Oral Health Prev Dent. 2019;17(6):505–14.

    PubMed  Google Scholar 

  6. Miao C, Liang C, Zhu J, Xu A, Zhao K, Hua Y, et al. Prognostic role of matrix metalloproteinases in bladder carcinoma: a systematic review and meta-analysis. Oncotarget. 2017;8(19):32309–21.

    Article  PubMed  PubMed Central  Google Scholar 

  7. Jia H, Zhang Q, Liu F, Zhou D. Prognostic value of MMP-2 for patients with ovarian epithelial carcinoma: a systematic review and meta-analysis. Arch Gynecol Obstet. 2017;295(3):689–96.

    Article  CAS  PubMed  Google Scholar 

  8. Zhu J, Zhang X, Ai L, Yuan R, Ye J. Clinicohistopathological implications of MMP/VEGF expression in retinoblastoma: a combined meta-analysis and bioinformatics analysis. J Transl Med. 2019;17(1):226.

    Article  PubMed  PubMed Central  Google Scholar 

  9. Papadopoulou S, Scorilas A, Arnogianaki N, Papapanayiotou B, Tzimogiani A, Agnantis N, et al. Expression of gelatinase-A (MMP-2) in human colon cancer and normal colon mucosa. Tumor Biology. 2001;22(6):383–9.

    Article  CAS  PubMed  Google Scholar 

  10. Lee J, Lee J, Kim JH. Identification of Matrix Metalloproteinase 11 as a Prognostic Biomarker in Pancreatic Cancer. Anticancer Res. 2019;39(11):5963.

    Article  CAS  PubMed  Google Scholar 

  11. Benson CS, Babu SD, Radhakrishna S, Selvamurugan N, Ravi Sankar B. Expression of matrix metalloproteinases in human breast cancer tissues. Dis Markers. 2013;34(6):395–405.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  12. Ren F, Tang R, Zhang X, Madushi WM, Luo D, Dang Y, et al. Overexpression of MMP Family Members Functions as prognostic biomarker for breast Cancer patients: a systematic review and Meta-analysis. PLoS ONE. 2015;10(8):e0135544.

    Article  PubMed  PubMed Central  Google Scholar 

  13. Li H, Qiu Z, Li F, Wang C. The relationship between MMP-2 and MMP-9 expression levels with breast cancer incidence and prognosis. Oncol Lett. 2017;14(5):5865–70.

    PubMed  PubMed Central  Google Scholar 

  14. Joseph C, Alsaleem M, Orah N, Narasimha PL, Miligy IM, Kurozumi S, et al. Elevated MMP9 expression in breast cancer is a predictor of shorter patient survival. Breast Cancer Res Treat. 2020;182(2):267–82.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  15. Cheng C-W, Yu J-C, Wang H-W, Huang C-S, Shieh J-C, Fu Y-P, et al. The clinical implications of MMP-11 and CK-20 expression in human breast cancer. Clin Chim Acta. 2010;411(3–4):234–41.

    Article  CAS  PubMed  Google Scholar 

  16. Zeng Y, Liu C, Dong B, Li Y, Jiang B, Xu Y, et al. Inverse correlation between Naa10p and MMP-9 expression and the combined prognostic value in breast cancer patients. Med Oncol. 2013;30(2):562.

    Article  PubMed  Google Scholar 

  17. Min KW, Kim DH, Do SI, Kim K, Lee HJ, Chae SW, et al. Expression patterns of stromal MMP-2 and tumoural MMP-2 and – 9 are significant prognostic factors in invasive ductal carcinoma of the breast. Apmis. 2014;122(12):1196–206.

    Article  CAS  PubMed  Google Scholar 

  18. Yang J, Min KW, Kim DH, Son BK, Moon KM, Wi YC, et al. High TNFRSF12A level associated with MMP-9 overexpression is linked to poor prognosis in breast cancer: gene set enrichment analysis and validation in large-scale cohorts. PLoS ONE. 2018;13(8):e0202113.

    Article  PubMed  PubMed Central  Google Scholar 

  19. Chenard MP, O’Siorain L, Shering S, Rouyer N, Lutz Y, Wolf C, et al. High levels of stromelysin-3 correlate with poor prognosis in patients with breast carcinoma. Int J Cancer. 1996;69(6):448–51.

    Article  CAS  PubMed  Google Scholar 

  20. Decock J, Hendrickx W, Drijkoningen M, Wildiers H, Neven P, Smeets A, et al. Matrix metalloproteinase expression patterns in luminal A type breast carcinomas. Dis Markers. 2007;23(3):189–96.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  21. Gialeli C, Theocharis AD, Karamanos NK. Roles of matrix metalloproteinases in cancer progression and their pharmacological targeting. Febs j. 2011;278(1):16–27.

    Article  CAS  PubMed  Google Scholar 

  22. Nöel A, Lefebvre O, Maquoi E, VanHoorde L, Chenard M-P, Mareel M, et al. Stromelysin-3 expression promotes tumor take in nude mice. J Clin Investig. 1996;97(8):1924–30.

    Article  PubMed  PubMed Central  Google Scholar 

  23. Köhrmann A, Kammerer U, Kapp M, Dietl J, Anacker J. Expression of matrix metalloproteinases (MMPs) in primary human breast cancer and breast cancer cell lines: New findings and review of the literature. BMC Cancer. 2009;9(1):188.

    Article  PubMed  PubMed Central  Google Scholar 

  24. Peruzzi D, Mori F, Conforti A, Lazzaro D, De Rinaldis E, Ciliberto G, et al. MMP11: a Novel Target Antigen for Cancer Immunotherapy. Clin Cancer Res. 2009;15(12):4104–13.

    Article  CAS  PubMed  Google Scholar 

  25. Zhuang Y, Li X, Zhan P, Pi G, Wen G. MMP11 promotes the proliferation and progression of breast cancer through stabilizing Smad2 protein. Oncol Rep. 2021;45(4).

  26. Kim HS, Kim MG, Min KW, Jung US, Kim DH. High MMP-11 expression associated with low CD8 + T cells decreases the survival rate in patients with breast cancer. PLoS ONE. 2021;16(5):e0252052.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  27. Zhang M, Teng X-d, Guo X-x, Li Z-g, Han J-g, Yao L. Expression of tissue levels of matrix metalloproteinases and their inhibitors in breast cancer. The Breast. 2013;22(3):330–4.

    Article  PubMed  Google Scholar 

  28. Mohammadian H, Sharifi R, Rezanezhad Amirdehi S, Taheri E, Babazadeh Bedoustani A. Matrix metalloproteinase MMP1 and MMP9 genes expression in breast cancer tissue. Gene Rep. 2020;21:100906.

    Article  CAS  Google Scholar 

  29. Chung AWY, Hsiang YN, Matzke LA, McManus BM, Breemen Cv, Okon EB. Reduced expression of vascular endothelial growth factor paralleled with the increased angiostatin expression resulting from the upregulated activities of Matrix Metalloproteinase-2 and – 9 in human type 2 Diabetic arterial vasculature. Circul Res. 2006;99(2):140–8.

    Article  CAS  Google Scholar 

  30. Hsin C-H, Chou Y-E, Yang S-F, Su S-C, Chuang Y-T, Lin S-H et al. MMP-11 promoted the oral cancer migration and FAK/Src activation. Oncotarget. 2017;8(20).

  31. Majumder A, Ray S, Banerji A. Epidermal growth factor receptor-mediated regulation of matrix metalloproteinase-2 and matrix metalloproteinase-9 in MCF-7 breast cancer cells. Mol Cell Biochem. 2019;452(1–2):111–21.

    Article  CAS  PubMed  Google Scholar 

  32. Fromigué O, Louis K, Wu E, Belhacène N, Loubat A, Shipp M, et al. Active stromelysin-3 (MMP‐11) increases MCF‐7 survival in three‐dimensional Matrigel culture via activation of p42/p44 MAP‐kinase. Int J Cancer. 2003;106(3):355–63.

    Article  PubMed  Google Scholar 

  33. Marino M, Galluzzo P, Ascenzi P. Estrogen signaling multiple pathways to impact gene transcription. Curr Genom. 2006;7(8):497–508.

    Article  CAS  Google Scholar 

  34. Barrasa JI, Olmo N, Santiago-Gómez A, Lecona E, Anglard P, Turnay J, et al. Histone deacetylase inhibitors upregulate MMP11 gene expression through Sp1/Smad complexes in human colon adenocarcinoma cells. Biochim Biophys Acta. 2012;1823(2):570–81.

    Article  CAS  PubMed  Google Scholar 

  35. Sathyanarayanan A, Natarajan A, Paramasivam OR, Gopinath P, Gopal G. Comprehensive analysis of genomic alterations, clinical outcomes, putative functions and potential therapeutic value of MMP11 in human breast cancer. Gene Rep. 2020;21:100852.

    Article  CAS  Google Scholar 

  36. Kang SU, Cho SY, Jeong H, Han J, Chae HY, Yang H, et al. Matrix metalloproteinase 11 (MMP11) in macrophages promotes the migration of HER2-positive breast cancer cells and monocyte recruitment through CCL2–CCR2 signaling. Lab Invest. 2022;102(4):376–90.

    Article  CAS  PubMed  Google Scholar 

  37. Kalavska K, Cierna Z, Karaba M, Minarik G, Benca J, Sedlackova T, et al. Prognostic role of matrix metalloproteinase 9 in early breast cancer. Oncol Lett. 2021;21(2):1.

    Google Scholar 

  38. Cui N, Hu M, Khalil RA. Chapter one - biochemical and biological attributes of Matrix Metalloproteinases. In: Khalil RA, editor. Progress in Molecular Biology and Translational Science. Volume 147. Academic Press; 2017. pp. 1–73.

  39. Rio MC, Lefebvre O, Santavicca M, Noël A, Chenard MP, Anglard P, et al. Stromelysin-3 in the biology of the normal and neoplastic mammary gland. J Mammary Gland Biol Neoplasia. 1996;1(2):231–40.

    Article  CAS  PubMed  Google Scholar 

  40. Wolf C, Rouyer N, Lutz Y, Adida C, Loriot M, Bellocq JP et al. Stromelysin 3 belongs to a subgroup of proteinases expressed in breast carcinoma fibroblastic cells and possibly implicated in tumor progression. Proceedings of the National Academy of Sciences. 1993;90(5):1843-7.

  41. Basset P, Bellocq JP, Wolf C, Stoll I, Hutin P, Limacher JM, et al. A novel metalloproteinase gene specifically expressed in stromal cells of breast carcinomas. Nature. 1990;348(6303):699–704.

    Article  CAS  PubMed  Google Scholar 

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Acknowledgements

The authors acknowledged all staff of the pathology department and drivers’ officers (Mr. Shambel and Mr. Solomon Gebre) and drivers from Armauer Hansen Research Institute for their contributions. The authors have also acknowledged Fitsum Girma (Ph.D.) for providing a few reagents for PCR work.

Funding

This study was funded by Armauer Hansen Research Institute, Addis Ababa University, and Mizan Tepi University.

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Contributions

EBB contributed to study design, sample and data acquisition, analysis, interpretation and writing of the original and final draft. DBD, TYG, DAT, FAA, DHA,TS and SG contributed to data analysis, data interpretation, sample acquisition and experimental work MC and DTS contributed to data analysis, data interpretation, experimental work and editing of the manuscript. AFD, TST, EJK and RH contributed to study design, data acquisition, data analysis, data interpretation and editing of the manuscript.

Corresponding author

Correspondence to Esmael Besufikad Belachew.

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Ethical approval for this study was obtained from the College of Natural Science Institutional Ethics Review Board (CNS-IRB) Addis Ababa University (No. IRB/032/2018) and AHRI/ALERT Ethics Review Committee (AAERC) (No. PO/27/19). Informed consent was not obtained because we used archived tissue blocks.

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Not applicable.

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The authors declare no competing interests.

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Belachew, E.B., Desta, A.F., Deneke, D.B. et al. The expression of matrix metalloproteinase 2, 9 and 11 in Ethiopian breast cancer patients. BMC Res Notes 16, 253 (2023). https://doi.org/10.1186/s13104-023-06518-5

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