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Journals / Balıkesir Sağlık Bilimleri Dergisi / 2026 / Volume: 15 Issue: 1

From Methylation to Pluripotency: Epigenetic Programming in Early Embryo Development

Metilasyondan Pluripotensiye Erken Embriyo Gelişiminde Epigenetik Programlama

Zehra Manav Yiğit(ADNAN MENDERES ÜNİVERSİTESİ, TIP FAKÜLTESİ)0000-0002-9505-0371
Lamiya Mardan Hacızade(SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, İSTANBUL HASEKİ SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, TIBBİ GENETİK ANABİLİM DALI)0000-0002-5348-557X
Mustafa Altan(SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, ANKARA ŞEHİR SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, TIBBİ GENETİK ANABİLİM DALI)0000-0002-8998-3087
Metin Çalışkan(UŞAK ÜNİVERSİTESİ, TIP FAKÜLTESİ)0000-0002-9243-4943
Gökay Bozkurt(Adnan Menderes Üniversitesi, Tıp Fakültesi, Tıbbi Genetik AD)0000-0002-6963-3186
Nazlı Can(MUĞLA SITKI KOÇMAN ÜNİVERSİTESİ, TIP FAKÜLTESİ)0000-0003-2023-8246
Pages
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Publication Date
2026-02-28
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Combined mRNA and protein analysis provides a comprehensive molecular profile that is relevant to reproductive medicine and developmental biology.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Early embryonic development is orchestrated by transcriptional and epigenetic mechanisms that regulate pluripotency and differentiation.
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Key Findings & Data:This study aimed to investigate the stage-specific expression of key transcription factors (Oct-3/-4, Sox-2, Nanog, SSEA-1, and c-Myc) and DNA methylation enzymes (Dnmt1 and Dnmt3) during the pre-implantation period in a rat model.
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Conclusion & Impact:Combined mRNA and protein analysis provides a comprehensive molecular profile that is relevant to reproductive medicine and developmental biology.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:DNA methylation · Embryonic development · Pluripotent

Abstract

Objective: Early embryonic development is orchestrated by transcriptional and epigenetic mechanisms that regulate pluripotency and differentiation. This study aimed to investigate the stage-specific expression of key transcription factors (Oct-3/-4, Sox-2, Nanog, SSEA-1, and c-Myc) and DNA methylation enzymes (Dnmt1 and Dnmt3) during the pre-implantation period in a rat model. Materials and Methods: Embryos were collected at the 2-8 cell, 8-16 cell, and blastocyst stages. Gene expression levels were assessed using real-time PCR, while protein localisation was evaluated via immunofluorescence staining. Results: Oct-3/-4 and Sox-2 exhibited the highest levels of expression at the 2–8 cell stage, which suggests that they play an important role in the maintenance of pluripotency at an early stage. Nanog, c-Myc, and Dnmt3 were significantly upregulated at the blastocyst stage, indicating their involvement in lineage commitment. Dnmt-1 was consistently expressed across all stages, which supports its role in epigenetic memory. Discrepancies between SSEA-1 gene expression and protein detection suggested post-transcriptional regulation. Conclusion: These findings emphasise the dynamic and coordinated functions of transcriptional and epigenetic regulators during the early stages of embryogenesis. Combined mRNA and protein analysis provides a comprehensive molecular profile that is relevant to reproductive medicine and developmental biology.

Özet

Amaç: Erken embriyonik gelişim, pluripotensi ve farklılaşmayı düzenleyen transkripsiyonel ve epigenetik mekanizmalar tarafından koordine edilir. Bu çalışma, sıçan modelinde implantasyon öncesi dönemde önemli transkripsiyon faktörlerinin (Oct-3/-4, Sox-2, Nanog, SSEA-1 ve c-Myc) ve DNA metilasyon enzimlerinin (Dnmt1 ve Dnmt3) aşama spesifik ekspresyonunu araştırmayı amaçlamıştır. Gereç ve Yöntem: Embriyolar 2-8 hücre, 8-16 hücre ve blastosist aşamalarında toplandı. Gen ekspresyon düzeyleri gerçek zamanlı PCR kullanılarak değerlendirilirken, protein lokalizasyonu immünofloresan boyama ile değerlendirildi. Bulgular: Oct-3/-4 ve Sox-2, 2-8 hücre aşamasında en yüksek ekspresyon seviyelerine ulaştı, bu da bu faktörlerin erken aşamada pluripotansiyetin korunmasında önemli bir rol oynadığını göstermektedir. Nanog, c-Myc ve Dnmt3’in, blastosist aşamasında önemli ölçüde ifade düzeyi arttı, bu da bu faktörlerin soy belirlemede rol oynadığını göstermektedir. Dnmt-1, tüm aşamalarda tutarlı bir şekilde eksprese edildi, bu da epigenetik hafızadaki rolünü desteklemektedir. SSEA-1 gen ekspresyonu ile protein tespiti arasındaki tutarsızlıklar, transkripsiyon sonrası regülasyonu düşündürmektedir. Sonuç: Çalışma, transkripsiyon faktörlerinin ve DNA metilasyonunun embriyonik gelişimde önemli roller oynadığını göstermektedir. Dnmt-1'in tüm aşamalarda sürekli varlığı, embriyo gelişiminde sürekli bir epigenetik etki olduğunu göstermektedir. Bu bulgular, erken embriyonik gen regülasyonu hakkında bilgi sağlar ve gelişimsel bozukluklar üzerine gelecekteki araştırmalarda yararlı olabilir.

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Cite This Article

Yiğit, Z. M., Hacızade, L. M., Altan, M., Çalışkan, M., Bozkurt, G., Can, N. (2026). From Methylation to Pluripotency: Epigenetic Programming in Early Embryo Development. Balıkesir Sağlık Bilimleri Dergisi, Volume: 15 Issue: 1. https://doi.org/10.53424/balikesirsbd.1737294

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