인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Multiple myeloma (MM) cells originate from antibody-producing plasma cells and endure chronic oxidative and proteotoxic stress due to the excessive production of immunoglobulins and free light chains. We previously demonstrated that CD56 (also known as neuronal cell adhesion molecule 1) promotes cAMP-responsive element binding (CREB1) activation in MM cells to drive survival, without fully elucidating its mechanism of action. In this study, we describe the global role of CREB1 in regulating tolerance to cellular stresses in MM. Here, we present data to demonstrate that CREB1 directly or indirectly influences key proteins involved in the clearance of oxidants, the unfolded protein response (UPR), and autophagy. In silico data from real patients with MM showed that patients with high CREB1 expression have greater activation of gene sets associated with endurance of stress. We confirmed by genomic and pharmacological modulation that CREB1 activates the mTOR pathway, halting autophagy, and directly binds to the promoter of NRF2 and PERK, modulating genes involved in oxidation and protein stress adaptation. Of particular importance was the identification of TXNIP among the regulated genes. Notably, the TXNIP gene belongs to the 1q21 cytoband, which is amplified in 30 percent of patients with MM, leading to poor outcomes. We showed for the first time that TXNIP inhibition is also toxic against MM cells, interfering with UPR and autophagy. Thus, our data highlights the essential roles of CREB1 and TXNIP in MM cell survival under chronic stress, providing new insights into MM pathophysiology and novel therapeutic strategies for patients with high-risk disease.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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