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Review

P53 and Rb Aberrations in Small Cell Lung Cancer (SCLC): From Molecular Mechanisms to Therapeutic Modulation

by
Kostas A. Papavassiliou
1,*,
Amalia A. Sofianidi
2,†,
Vassiliki A. Gogou
1,†,
Nektarios Anagnostopoulos
1 and
Athanasios G. Papavassiliou
2,*
1
First University Department of Respiratory Medicine, ‘Sotiria’ Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
2
Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2024, 25(5), 2479; https://doi.org/10.3390/ijms25052479
Submission received: 17 January 2024 / Revised: 13 February 2024 / Accepted: 20 February 2024 / Published: 20 February 2024
(This article belongs to the Section Molecular Pathology, Diagnostics, and Therapeutics)

Abstract

The genes coding for the tumor suppressors p53 and retinoblastoma (Rb) are inactivated in the vast majority of small cell lung cancer (SCLC) tumors. Data support the notion that these two deleterious genetic events represent the initial steps in the development of SCLC, making them essential for a lung epithelial cell to progress toward the acquisition of a malignant phenotype. With the loss of TP53 and RB1, their broad tumor suppressive functions are eliminated and a normal cell is able to proliferate indefinitely, escape entering into cellular senescence, and evade death, no matter the damage it has experienced. Within this setting, lung epithelial cells accumulate further oncogenic mutations and are well on their way to becoming SCLC cells. Understanding the molecular mechanisms of these genetic lesions and their effects within lung epithelial cells is of paramount importance, in order to tackle this aggressive and deadly lung cancer. The present review summarizes the current knowledge on p53 and Rb aberrations, their biological significance, and their prospective therapeutic potential, highlighting completed and ongoing clinical trials with agents that target downstream pathways.
Keywords: p53; Rb; small cell lung cancer; genetic alterations and aberrations; mutations p53; Rb; small cell lung cancer; genetic alterations and aberrations; mutations

Share and Cite

MDPI and ACS Style

Papavassiliou, K.A.; Sofianidi, A.A.; Gogou, V.A.; Anagnostopoulos, N.; Papavassiliou, A.G. P53 and Rb Aberrations in Small Cell Lung Cancer (SCLC): From Molecular Mechanisms to Therapeutic Modulation. Int. J. Mol. Sci. 2024, 25, 2479. https://doi.org/10.3390/ijms25052479

AMA Style

Papavassiliou KA, Sofianidi AA, Gogou VA, Anagnostopoulos N, Papavassiliou AG. P53 and Rb Aberrations in Small Cell Lung Cancer (SCLC): From Molecular Mechanisms to Therapeutic Modulation. International Journal of Molecular Sciences. 2024; 25(5):2479. https://doi.org/10.3390/ijms25052479

Chicago/Turabian Style

Papavassiliou, Kostas A., Amalia A. Sofianidi, Vassiliki A. Gogou, Nektarios Anagnostopoulos, and Athanasios G. Papavassiliou. 2024. "P53 and Rb Aberrations in Small Cell Lung Cancer (SCLC): From Molecular Mechanisms to Therapeutic Modulation" International Journal of Molecular Sciences 25, no. 5: 2479. https://doi.org/10.3390/ijms25052479

APA Style

Papavassiliou, K. A., Sofianidi, A. A., Gogou, V. A., Anagnostopoulos, N., & Papavassiliou, A. G. (2024). P53 and Rb Aberrations in Small Cell Lung Cancer (SCLC): From Molecular Mechanisms to Therapeutic Modulation. International Journal of Molecular Sciences, 25(5), 2479. https://doi.org/10.3390/ijms25052479

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