Gene Therapy Could Cure Osteoarthritis by Rejuvenating Aging Cells

by Mohamed Fathima S on  March 28, 2019 at 5:19 PM Research News
RSS Email Print This Page Comment bookmark
Font : A-A+

Osteoarthritis (OA) is a chronic disease characterized by degeneration of articular cartilage leading to pain and physical disability, where aging is considered a significant risk factor. According to a study published in Cell Reports, a protein factor called CBX4 could help treat osteoarthritis in mice.
Gene Therapy Could Cure Osteoarthritis by Rejuvenating Aging Cells
Gene Therapy Could Cure Osteoarthritis by Rejuvenating Aging Cells

Senescent mesenchymal stem cells (hMSCs) are found in cartilage tissues isolated from patients suffering from osteoarthritis. Notably, senescent MSCs have been regarded as an important therapeutic target for geroprotection against tissue degeneration.

These scientists, from the Institute of Zoology of the Chinese Academy of Sciences (CAS), Peking University and the Institute of Biophysics of CAS, found that CBX4 safeguarded hMSCs against cellular senescence through the regulation of nucleolar architecture and function.

Importantly, CBX4 overexpression attenuated the development of osteoarthritis in mice, suggesting a target for therapeutic interventions against aging-associated disorders.

CBX4, a component of polycomb repressive complex 1 (PRC1), plays an important role in the regulation of cell identity and organ development through gene silencing.

CBX4 protein was downregulated in aged hMSCs whereas CBX4 knockout in hMSCs resulted in destabilized nucleolar heterochromatin, enhanced ribosome biogenesis, increased protein translation, and accelerated cellular senescence.

CBX4 maintained nucleolar homeostasis by recruiting nucleolar protein fibrillarin and heterochromatin protein KRAB-associated protein 1 (KAP1) at nucleolar rDNA, limiting the excessive expression of rRNAs.

Importantly, overexpression of CBX4 alleviated physiological hMSC aging and attenuated the development of osteoarthritis in mice.

These findings not only highlight that CBX4-mediated nucleolar homeostasis is a key gatekeeper for hMSC aging. They also open an avenue for preventing aging-associated stem cell exhaustion and, hopefully, treating age-related disorders in the future.

Taken together, the researchers revealed a new mechanism for the nucleolar protein CBX4 in maintaining hMSC homeostasis.

These findings prove the feasibility of using gene therapy strategies to rejuvenate senescent cells and treat osteoarthritis, providing a promising option for future geriatrics and regenerative medicine.



Source: Eurekalert

Post a Comment

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
Notify me when reply is posted
I agree to the terms and conditions
Advertisement

More News on:

DNA Finger Printing Osteoarthritis Parkinsons Disease Surgical Treatment Reiki and Pranic Healing Ageing and Sleep Genetic Testing of Diseases Pancreas Hypermobility Syndrome Back Pain at Workplace: Prevention and Exercises Knee Replacement Surgery 

News A - Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

News Search

Medindia Newsletters

Subscribe to our Free Newsletters!

Terms & Conditions and Privacy Policy.

Find a Doctor

Stay Connected

  • Available on the Android Market
  • Available on the App Store

News Category

News Archive