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The Diagnostic and Prognostic Values of FOXP3 Gene in Iraqi Breast Cancer Women
أهمية ألجين FOXP3 في ألكشف عن و ألتنبؤ بتقدم سرطان ألثدي لدى ألمريضات ألعراقيات

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Abstract

Background: The transcription factor forkhead-box protein P3 (FOXP3) have been identi ed to counteract the anti-tumor im- mune responses during tumor progression. In addition, by expressing FOXP3, tumor cells may evade effector T-cell responses, resulting in a survival bene t of the tumor.Objectives: Evaluation of the diagnostic and/or prognostic values of FOXP3 gene in breast cancer Iraqi female patients by initially comparing the expression concentrations of this gene between breast cancer patients and control group, then, compar- ing the expression levels of FOXP3 with certain clinical features among breast cancer patients (ages of patients, tumor grade, tumor stage and the presence or absence of metastasis).Material and Methods: The Foxp3 levels were determined in tissue samples (Formalin Fixed Paraf n Embedded Tissue “FFPE”) derived from 51 Invasive Ductal Carcinoma women and 33 benign breast tumor women (control group) were at- tended to the Medical City and Al-Yarmouk teaching laboratories / Baghdad – Iraq. The patients’ samples were subjected to total RNA extraction, and then to molecular study by using reverse transcription and quantitative real time PCR at Molecular Oncology Unit in Guy ́s Hospital – Kings College / London – UK.Results: The FOXP3 gene expression was detected in 45 (88.23%) of breast cancer patients, also, the expression levels of this gene showed high signi cant increase in breast cancer patients compared to control group. Furthermore, there were a gradual increase in the FOXP3 expression concentrations with disease grades (highly signi cant) and stages (signi cant) progres- sion in patients with primary breast cancer, moreover, the metastatic breast cancer patients showed high signi cant increase in FOXP3 levels compared to primary breast cancer patients. There were no signi cant differences in the levels of FOXP3 among the age groups of patients.Conclusions: The present study results re ect the potential utility of FOXP3 as noninvasive marker for detecting breast cancer even in the earliest cancer stages, also, they suggest that possibility of using this gene as an ef cient molecular signature for detecting breast cancer disease progression, discrimination between different stages and grades of breast tumors, and it might be of value as a prognostic marker.

أجريت ألدراسة ألحالية للكشف عن مستويات ألتعبير للجين )FOXP3( وذلك لتقييم دوره في ألكشف عن وألتنبؤ بتطور سرطان ألثدي لدى ألنساء ألعراقيات عن طريق مقارنة مستويات تعبيره بين مجموعة من ألنساء ألمصابات بسرطان ألثدي ومجموعة من ألنساء ألمصابات بورم ألثدي ألحميد )مجموعة سيطرة(˓ وكذلك عن طريق مقارنة مستويات ألتعبير لهذا ألجين بين ألنساء ألمصابات بسرطان ألثدي أنفسهن با عتماد على أ خت ف في بعض ألمظاهر ألسريرية )ألمجاميع ألعمرية˓ درجة ألمرض˓ مرحلة ألمرض˓ وجود أو عدم وجود ألسرطان من ألنوع ألمنتشر(. إشتملت ألدراسة على عينات نسيجية تم إستحصالها من 51 مريضة مصابة بسرطان ألثدي )لديهن مراحل مختلفة من مرض سرطان ألثدي( بعد تشخيصها من قبل بعض ألمستشفيات ألعراقية، إضافة إلى عينات نسيجية أخرى ماخوذة من 33 إمرأة مصابة بورم ألثدي ألحميد. تم معاملة ألعينات لغرض إستخ ص ألحمض ألنووي ألريبي ألكلي˓ ثم أجريت ألدراسة ألجزيئية باستخدام تقنية )Quantitative Real Time - PCR( في وحدة علم أ ورام ألجزيئي في مستشفى GUY̛ S / ألكلية ألملكية – لندن/ بريطانيا. أظهرت نتائج ألتعبير للجين )FOXP3( بأن هناك 45 مريضة )%88.23( من ألمريضات ألمصابات بسرطان ألثدي كانت نتائجهن إيجابية لهذا ألجين˓ كما وأكدت ألنتائج بأن هناك إرتفاعا كبيرا في مستويات تعبيره لدى مريضات سرطان ألثدي بالمقارنة مع مجموعة ألسيطرة. وقد وجد أن هناك زيادة ملحوظة في مستويات ألتعبير للجين )FOXP3( مع تطور حالة )درجة و مرحلة( ألمرض في مريضات سرطان ألثدي غير ألمنتشر. من ألناحية أ خرى˓ أثبتت ألنتائج بأن هناك إرتفاعا كبيرا في مستويات ألتعبير لهذا ألجين في مريضات سرطان ألثدي ألمنتشر مقارنة با خريات ألمصابات بالنوع غير ألمنتشر. إضافة إلى ذلك فقد أظهرت ألدراسة ألحالية عدم وجودفروقات إحصائية في مستويات ألتعبير لهذا ألجين مع ألتقدم في ألسن.


Article
FOXP3-INFILTRATING CELLULAR EXPRESSION IN RHEUMATIC MITRAL VALVE TISSUE LESIONS

Authors: Zaman I.L. Al-Kaabi زمن ابراهيم الكعبي --- Nidhal A.M. Mohammed نضال عبد المهيمن محمد
Journal: IRAQI JOURNAL OF MEDICAL SCIENCES المجلة العراقية للعلوم الطبية ISSN: P16816579,E22244719 Year: 2011 Volume: 9 Issue: 2 Pages: 102-107
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

Background: The Foxp3 gene is exclusive. It found in nTregs and correlates with the suppressive activity of these cells.Objective: To detect Foxp3 expression in infiltrating cells in the rheumatic mitral valve tissue lesions and its correlation with the extent of histopathological abnormalities when considered naturally occurring CD4+CD25+ regulatory T cells (nTregs) as the main expressers for this protein.Methods: Rheumatic mitral valve surgical fragments were taken from a total of 48 Iraqi patients with chronic rheumatic heart disease underwent mitral valve replacement in Ibn Al-Bitar Hospital for Cardiac Surgery-Baghdad-Iraq from October 2006-September 2007. Formalin-fixed paraffin-embedded mitral valve tissue sections were prepared. Foxp3-expressing cells were detected by using immunohistochemical staining technique, and histopathological picture was visualized by using hematoxylin and eosin staining.Results: Our results showed that there were no significant association between Foxp3 expression and the history of acute rheumatic fever (negative or positive), and/or the frequency of attacks (single or multiple) among all groups under study (p > 0.05). Also, we found a significant negative correlation between the percentage of Foxp3 strong positive cells and the extent of histopathological abnormalities.Conclusions: There was a negative correlation between Foxp3 strong positive expression and the extent of histopathological abnormalities which reinforce the immunosuppressive role of nTregs against the inflammatory and autoimmune reactions in chronic rheumatic heart disease. Key words: Foxp3, CD4+CD25+ regulatory T cells, mitral valve


Article
Forkhead box P3 gene expression and chromosomal analysis in a sample of Iraqi patients with multiple sclerosis

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Abstract

Background: Multiple Sclerosis disease is a demyelination process which interferes with the neuronal signal transmission, thus leading to different cognitive and physical dysfunctions like optic neuritis, motor, sensory and coordination problems. Recently many researches have been directed toward studying the relation between some genes and multiple sclerosis. Among the important genes to be studied in multiple sclerosis is the forkhead box P3 gene expression.Objectives: The aims of the present work were to study the expression of forkhead box P3 gene by real time polymerase chain reaction, and to perform chromosomal analysis on the multiple sclerosis patients peripheral blood lymphocytes.Patients and methods: A case-control study was performed using real time polymerase chain reaction technique to measure the relative expression of forkhead box P3 gene in peripheral blood leukocytes of 25 newly diagnosed untreated multiple sclerosis patients and comparing them with that of 25 apparently healthy controls, in addition to performing chromosomal analysis on multiple sclerosis patients peripheral blood lymphocytes.Results: Significant down-regulation in forkhead box P3 gene was detected in multiple sclerosis patients in comparison to controls. Chromosomal analysis that was performed for multiple sclerosis patients revealed normal results.Conclusion: Multiple sclerosis is associated with significant change in forkhead box P3 gene expression that can be measured by real time polymerase chain reaction technique. Furthermore, multiple sclerosis is not associated with gross chromosomal abnormalities.Key words: Multiple sclerosis, Foxp3 gene, real time PCR, chromosomal abnormality.

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